./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 846c6ea342419c7ea85c72de8af40f1cf8af72c22131b8a3f2ebdacec113c699 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:04:09,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:04:09,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:04:09,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:04:09,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:04:09,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:04:09,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:04:09,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:04:09,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:04:09,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:04:09,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:04:09,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:04:09,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:04:09,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:04:09,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:04:09,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:04:09,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:04:09,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:04:09,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:04:09,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:04:09,840 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:04:09,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:04:09,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:04:09,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:04:09,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:04:09,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:04:09,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:04:09,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:04:09,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:04:09,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:04:09,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:04:09,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:04:09,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:04:09,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:04:09,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:04:09,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:04:09,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:04:09,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:04:09,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:04:09,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:04:09,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:04:09,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:04:09,851 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:04:09,865 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:04:09,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:04:09,865 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:04:09,865 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:04:09,866 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:04:09,866 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:04:09,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:04:09,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:04:09,867 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:04:09,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:04:09,867 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:04:09,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:04:09,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:04:09,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:04:09,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:04:09,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:04:09,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:04:09,868 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:04:09,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:04:09,869 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:04:09,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:04:09,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:04:09,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:04:09,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:04:09,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:04:09,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:04:09,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:04:09,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:04:09,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:04:09,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:04:09,871 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:04:09,871 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:04:09,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:04:09,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 846c6ea342419c7ea85c72de8af40f1cf8af72c22131b8a3f2ebdacec113c699 [2022-07-13 22:04:10,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:04:10,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:04:10,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:04:10,036 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:04:10,036 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:04:10,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c [2022-07-13 22:04:10,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8580a599/d2e6e1a432894d038ece639545302650/FLAG2893e1a2c [2022-07-13 22:04:10,460 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:04:10,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c [2022-07-13 22:04:10,466 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8580a599/d2e6e1a432894d038ece639545302650/FLAG2893e1a2c [2022-07-13 22:04:10,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8580a599/d2e6e1a432894d038ece639545302650 [2022-07-13 22:04:10,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:04:10,482 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:04:10,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:04:10,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:04:10,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:04:10,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:04:10" (1/1) ... [2022-07-13 22:04:10,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@528bef20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:10, skipping insertion in model container [2022-07-13 22:04:10,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:04:10" (1/1) ... [2022-07-13 22:04:10,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:04:10,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:04:10,666 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c[2495,2508] [2022-07-13 22:04:10,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:04:10,680 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:04:10,710 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c[2495,2508] [2022-07-13 22:04:10,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:04:10,722 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:04:10,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:10 WrapperNode [2022-07-13 22:04:10,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:04:10,725 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:04:10,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:04:10,726 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:04:10,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:10" (1/1) ... [2022-07-13 22:04:10,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:10" (1/1) ... [2022-07-13 22:04:10,764 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 158 [2022-07-13 22:04:10,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:04:10,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:04:10,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:04:10,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:04:10,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:10" (1/1) ... [2022-07-13 22:04:10,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:10" (1/1) ... [2022-07-13 22:04:10,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:10" (1/1) ... [2022-07-13 22:04:10,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:10" (1/1) ... [2022-07-13 22:04:10,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:10" (1/1) ... [2022-07-13 22:04:10,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:10" (1/1) ... [2022-07-13 22:04:10,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:10" (1/1) ... [2022-07-13 22:04:10,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:04:10,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:04:10,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:04:10,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:04:10,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:10" (1/1) ... [2022-07-13 22:04:10,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:04:10,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:04:10,821 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 22:04:10,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 22:04:10,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:04:10,851 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:04:10,851 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:04:10,851 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:04:10,851 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:04:10,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:04:10,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:04:10,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:04:10,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:04:10,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:04:10,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:04:10,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:04:10,853 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:04:10,947 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:04:10,964 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:04:11,157 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:04:11,163 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:04:11,164 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 22:04:11,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:04:11 BoogieIcfgContainer [2022-07-13 22:04:11,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:04:11,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:04:11,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:04:11,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:04:11,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:04:10" (1/3) ... [2022-07-13 22:04:11,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31795ed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:04:11, skipping insertion in model container [2022-07-13 22:04:11,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:10" (2/3) ... [2022-07-13 22:04:11,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31795ed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:04:11, skipping insertion in model container [2022-07-13 22:04:11,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:04:11" (3/3) ... [2022-07-13 22:04:11,173 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-file-item-symm.wvr.c [2022-07-13 22:04:11,176 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:04:11,183 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:04:11,183 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:04:11,183 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:04:11,272 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-13 22:04:11,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 198 places, 210 transitions, 436 flow [2022-07-13 22:04:11,432 INFO L129 PetriNetUnfolder]: 19/208 cut-off events. [2022-07-13 22:04:11,433 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 22:04:11,438 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 208 events. 19/208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 415 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 131. Up to 2 conditions per place. [2022-07-13 22:04:11,438 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 210 transitions, 436 flow [2022-07-13 22:04:11,446 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 199 transitions, 410 flow [2022-07-13 22:04:11,459 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:04:11,465 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@9f1762f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@d7016f1 [2022-07-13 22:04:11,465 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-13 22:04:11,506 INFO L129 PetriNetUnfolder]: 19/198 cut-off events. [2022-07-13 22:04:11,506 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 22:04:11,506 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:11,507 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:11,508 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:11,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:11,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1008090350, now seen corresponding path program 1 times [2022-07-13 22:04:11,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:11,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400064738] [2022-07-13 22:04:11,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:11,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:11,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:11,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:11,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400064738] [2022-07-13 22:04:11,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400064738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:11,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:11,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:11,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49602874] [2022-07-13 22:04:11,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:11,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:11,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:11,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:11,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:11,787 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-07-13 22:04:11,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 199 transitions, 410 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:11,791 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:11,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-07-13 22:04:11,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:11,902 INFO L129 PetriNetUnfolder]: 46/577 cut-off events. [2022-07-13 22:04:11,902 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-07-13 22:04:11,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 644 conditions, 577 events. 46/577 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3147 event pairs, 6 based on Foata normal form. 23/538 useless extension candidates. Maximal degree in co-relation 444. Up to 23 conditions per place. [2022-07-13 22:04:11,908 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 15 selfloop transitions, 3 changer transitions 3/198 dead transitions. [2022-07-13 22:04:11,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 198 transitions, 453 flow [2022-07-13 22:04:11,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:11,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:11,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 605 transitions. [2022-07-13 22:04:11,923 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9603174603174603 [2022-07-13 22:04:11,923 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 605 transitions. [2022-07-13 22:04:11,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 605 transitions. [2022-07-13 22:04:11,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:11,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 605 transitions. [2022-07-13 22:04:11,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:11,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:11,938 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:11,939 INFO L186 Difference]: Start difference. First operand has 187 places, 199 transitions, 410 flow. Second operand 3 states and 605 transitions. [2022-07-13 22:04:11,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 198 transitions, 453 flow [2022-07-13 22:04:11,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 198 transitions, 439 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 22:04:11,948 INFO L242 Difference]: Finished difference. Result has 187 places, 192 transitions, 412 flow [2022-07-13 22:04:11,949 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=412, PETRI_PLACES=187, PETRI_TRANSITIONS=192} [2022-07-13 22:04:11,952 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 0 predicate places. [2022-07-13 22:04:11,952 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 192 transitions, 412 flow [2022-07-13 22:04:11,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:11,953 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:11,953 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:11,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:04:11,954 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:11,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:11,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1177191630, now seen corresponding path program 1 times [2022-07-13 22:04:11,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:11,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904505547] [2022-07-13 22:04:11,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:11,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:12,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:12,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:12,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904505547] [2022-07-13 22:04:12,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904505547] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:12,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:12,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:12,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344268246] [2022-07-13 22:04:12,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:12,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:12,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:12,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:12,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:12,051 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-07-13 22:04:12,052 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 192 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,053 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:12,053 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-07-13 22:04:12,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:12,108 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([620] thread1EXIT-->L68-2: Formula: (and (= v_thread1Thread1of1ForFork0_thidvar1_4 0) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem25#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread1Thread1of1ForFork0_thidvar0_4)) InVars {thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem25#1=|v_ULTIMATE.start_main_#t~mem25#1_5|} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem25#1=|v_ULTIMATE.start_main_#t~mem25#1_5|} AuxVars[] AssignedVars[][150], [17#L50-1true, 50#L68-2true, Black: 201#true, 209#(not (= (+ ~isNull_0~0 (* (- 256) (div ~isNull_0~0 256))) 0)), 203#(not (= (+ ~isNull_3~0 (* (- 256) (div ~isNull_3~0 256))) 0))]) [2022-07-13 22:04:12,109 INFO L384 tUnfolder$Statistics]: this new event has 70 ancestors and is cut-off event [2022-07-13 22:04:12,109 INFO L387 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-07-13 22:04:12,109 INFO L387 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-07-13 22:04:12,109 INFO L387 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-07-13 22:04:12,127 INFO L129 PetriNetUnfolder]: 50/851 cut-off events. [2022-07-13 22:04:12,127 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-07-13 22:04:12,129 INFO L84 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 851 events. 50/851 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5883 event pairs, 10 based on Foata normal form. 0/800 useless extension candidates. Maximal degree in co-relation 543. Up to 46 conditions per place. [2022-07-13 22:04:12,131 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 15 selfloop transitions, 3 changer transitions 0/198 dead transitions. [2022-07-13 22:04:12,131 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 198 transitions, 463 flow [2022-07-13 22:04:12,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:12,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:12,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-07-13 22:04:12,132 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-07-13 22:04:12,133 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-07-13 22:04:12,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-07-13 22:04:12,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:12,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-07-13 22:04:12,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,136 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,136 INFO L186 Difference]: Start difference. First operand has 187 places, 192 transitions, 412 flow. Second operand 3 states and 591 transitions. [2022-07-13 22:04:12,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 198 transitions, 463 flow [2022-07-13 22:04:12,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 198 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:04:12,139 INFO L242 Difference]: Finished difference. Result has 187 places, 195 transitions, 439 flow [2022-07-13 22:04:12,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=439, PETRI_PLACES=187, PETRI_TRANSITIONS=195} [2022-07-13 22:04:12,140 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 0 predicate places. [2022-07-13 22:04:12,140 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 195 transitions, 439 flow [2022-07-13 22:04:12,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,141 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:12,141 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:12,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:04:12,141 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:12,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:12,142 INFO L85 PathProgramCache]: Analyzing trace with hash 977078206, now seen corresponding path program 2 times [2022-07-13 22:04:12,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:12,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391379170] [2022-07-13 22:04:12,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:12,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:12,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:12,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:12,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391379170] [2022-07-13 22:04:12,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391379170] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:12,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:12,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:12,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384354115] [2022-07-13 22:04:12,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:12,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:12,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:12,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:12,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:12,175 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-07-13 22:04:12,176 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 195 transitions, 439 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,176 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:12,176 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-07-13 22:04:12,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:12,231 INFO L129 PetriNetUnfolder]: 37/733 cut-off events. [2022-07-13 22:04:12,232 INFO L130 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2022-07-13 22:04:12,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 733 events. 37/733 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4638 event pairs, 8 based on Foata normal form. 0/692 useless extension candidates. Maximal degree in co-relation 484. Up to 27 conditions per place. [2022-07-13 22:04:12,235 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 16 selfloop transitions, 5 changer transitions 0/201 dead transitions. [2022-07-13 22:04:12,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 201 transitions, 502 flow [2022-07-13 22:04:12,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:12,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:12,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-07-13 22:04:12,237 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-07-13 22:04:12,237 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-07-13 22:04:12,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-07-13 22:04:12,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:12,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-07-13 22:04:12,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,240 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,240 INFO L186 Difference]: Start difference. First operand has 187 places, 195 transitions, 439 flow. Second operand 3 states and 591 transitions. [2022-07-13 22:04:12,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 201 transitions, 502 flow [2022-07-13 22:04:12,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 201 transitions, 499 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:04:12,244 INFO L242 Difference]: Finished difference. Result has 190 places, 198 transitions, 480 flow [2022-07-13 22:04:12,244 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=480, PETRI_PLACES=190, PETRI_TRANSITIONS=198} [2022-07-13 22:04:12,245 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 3 predicate places. [2022-07-13 22:04:12,245 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 198 transitions, 480 flow [2022-07-13 22:04:12,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,246 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:12,246 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:12,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:04:12,246 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:12,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:12,247 INFO L85 PathProgramCache]: Analyzing trace with hash -2000243524, now seen corresponding path program 1 times [2022-07-13 22:04:12,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:12,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957497668] [2022-07-13 22:04:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:12,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:12,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:12,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:12,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957497668] [2022-07-13 22:04:12,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957497668] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:12,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:12,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:12,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555453451] [2022-07-13 22:04:12,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:12,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:12,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:12,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:12,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:12,371 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:12,373 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 198 transitions, 480 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:12,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:12,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:12,709 INFO L129 PetriNetUnfolder]: 212/1287 cut-off events. [2022-07-13 22:04:12,709 INFO L130 PetriNetUnfolder]: For 59/79 co-relation queries the response was YES. [2022-07-13 22:04:12,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1924 conditions, 1287 events. 212/1287 cut-off events. For 59/79 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 9980 event pairs, 88 based on Foata normal form. 1/1223 useless extension candidates. Maximal degree in co-relation 1038. Up to 333 conditions per place. [2022-07-13 22:04:12,714 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 77 selfloop transitions, 5 changer transitions 34/282 dead transitions. [2022-07-13 22:04:12,715 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 282 transitions, 893 flow [2022-07-13 22:04:12,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:04:12,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-13 22:04:12,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4125 transitions. [2022-07-13 22:04:12,721 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8184523809523809 [2022-07-13 22:04:12,721 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4125 transitions. [2022-07-13 22:04:12,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4125 transitions. [2022-07-13 22:04:12,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:12,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4125 transitions. [2022-07-13 22:04:12,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.875) internal successors, (4125), 24 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,736 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,736 INFO L186 Difference]: Start difference. First operand has 190 places, 198 transitions, 480 flow. Second operand 24 states and 4125 transitions. [2022-07-13 22:04:12,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 282 transitions, 893 flow [2022-07-13 22:04:12,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 282 transitions, 877 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:12,741 INFO L242 Difference]: Finished difference. Result has 233 places, 202 transitions, 555 flow [2022-07-13 22:04:12,744 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=555, PETRI_PLACES=233, PETRI_TRANSITIONS=202} [2022-07-13 22:04:12,746 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 46 predicate places. [2022-07-13 22:04:12,746 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 202 transitions, 555 flow [2022-07-13 22:04:12,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,747 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:12,747 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:12,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:04:12,747 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:12,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:12,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1874070520, now seen corresponding path program 1 times [2022-07-13 22:04:12,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:12,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031371544] [2022-07-13 22:04:12,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:12,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:12,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:12,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:12,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031371544] [2022-07-13 22:04:12,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031371544] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:12,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:12,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:12,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389781099] [2022-07-13 22:04:12,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:12,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:12,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:12,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:12,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:12,792 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-07-13 22:04:12,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 202 transitions, 555 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:12,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-07-13 22:04:12,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:12,871 INFO L129 PetriNetUnfolder]: 54/796 cut-off events. [2022-07-13 22:04:12,871 INFO L130 PetriNetUnfolder]: For 759/774 co-relation queries the response was YES. [2022-07-13 22:04:12,874 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1397 conditions, 796 events. 54/796 cut-off events. For 759/774 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 5222 event pairs, 27 based on Foata normal form. 4/754 useless extension candidates. Maximal degree in co-relation 1305. Up to 38 conditions per place. [2022-07-13 22:04:12,876 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 16 selfloop transitions, 5 changer transitions 0/208 dead transitions. [2022-07-13 22:04:12,876 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 208 transitions, 618 flow [2022-07-13 22:04:12,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:12,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:12,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-07-13 22:04:12,878 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-07-13 22:04:12,878 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-07-13 22:04:12,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-07-13 22:04:12,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:12,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-07-13 22:04:12,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,880 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,881 INFO L186 Difference]: Start difference. First operand has 233 places, 202 transitions, 555 flow. Second operand 3 states and 591 transitions. [2022-07-13 22:04:12,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 208 transitions, 618 flow [2022-07-13 22:04:12,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 208 transitions, 599 flow, removed 9 selfloop flow, removed 10 redundant places. [2022-07-13 22:04:12,887 INFO L242 Difference]: Finished difference. Result has 210 places, 205 transitions, 580 flow [2022-07-13 22:04:12,888 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=580, PETRI_PLACES=210, PETRI_TRANSITIONS=205} [2022-07-13 22:04:12,888 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 23 predicate places. [2022-07-13 22:04:12,889 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 205 transitions, 580 flow [2022-07-13 22:04:12,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,889 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:12,889 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:12,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:04:12,890 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:12,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:12,890 INFO L85 PathProgramCache]: Analyzing trace with hash -502961112, now seen corresponding path program 2 times [2022-07-13 22:04:12,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:12,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831784469] [2022-07-13 22:04:12,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:12,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:12,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:12,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:12,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831784469] [2022-07-13 22:04:12,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831784469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:12,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:12,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:12,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158108013] [2022-07-13 22:04:12,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:13,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:13,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:13,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:13,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:13,002 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:13,004 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 205 transitions, 580 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:13,004 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:13,004 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:13,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:13,321 INFO L129 PetriNetUnfolder]: 145/1067 cut-off events. [2022-07-13 22:04:13,322 INFO L130 PetriNetUnfolder]: For 786/808 co-relation queries the response was YES. [2022-07-13 22:04:13,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2147 conditions, 1067 events. 145/1067 cut-off events. For 786/808 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7876 event pairs, 87 based on Foata normal form. 1/1013 useless extension candidates. Maximal degree in co-relation 1577. Up to 279 conditions per place. [2022-07-13 22:04:13,327 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 72 selfloop transitions, 5 changer transitions 35/281 dead transitions. [2022-07-13 22:04:13,327 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 281 transitions, 1160 flow [2022-07-13 22:04:13,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:04:13,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-13 22:04:13,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4117 transitions. [2022-07-13 22:04:13,334 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8168650793650793 [2022-07-13 22:04:13,334 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4117 transitions. [2022-07-13 22:04:13,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4117 transitions. [2022-07-13 22:04:13,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:13,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4117 transitions. [2022-07-13 22:04:13,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.54166666666666) internal successors, (4117), 24 states have internal predecessors, (4117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:13,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:13,350 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:13,350 INFO L186 Difference]: Start difference. First operand has 210 places, 205 transitions, 580 flow. Second operand 24 states and 4117 transitions. [2022-07-13 22:04:13,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 281 transitions, 1160 flow [2022-07-13 22:04:13,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 281 transitions, 1144 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:13,357 INFO L242 Difference]: Finished difference. Result has 253 places, 209 transitions, 671 flow [2022-07-13 22:04:13,358 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=671, PETRI_PLACES=253, PETRI_TRANSITIONS=209} [2022-07-13 22:04:13,359 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 66 predicate places. [2022-07-13 22:04:13,360 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 209 transitions, 671 flow [2022-07-13 22:04:13,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:13,360 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:13,361 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:13,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:04:13,361 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:13,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:13,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1915177424, now seen corresponding path program 3 times [2022-07-13 22:04:13,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:13,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886163107] [2022-07-13 22:04:13,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:13,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:13,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:13,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886163107] [2022-07-13 22:04:13,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886163107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:13,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:13,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:13,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433116096] [2022-07-13 22:04:13,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:13,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:13,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:13,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:13,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:13,468 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:13,470 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 209 transitions, 671 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:13,470 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:13,470 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:13,470 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:13,768 INFO L129 PetriNetUnfolder]: 157/1138 cut-off events. [2022-07-13 22:04:13,768 INFO L130 PetriNetUnfolder]: For 3105/3120 co-relation queries the response was YES. [2022-07-13 22:04:13,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2957 conditions, 1138 events. 157/1138 cut-off events. For 3105/3120 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 8636 event pairs, 91 based on Foata normal form. 1/1081 useless extension candidates. Maximal degree in co-relation 2815. Up to 315 conditions per place. [2022-07-13 22:04:13,776 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 57 selfloop transitions, 12 changer transitions 28/266 dead transitions. [2022-07-13 22:04:13,776 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 266 transitions, 1383 flow [2022-07-13 22:04:13,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:04:13,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-13 22:04:13,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3768 transitions. [2022-07-13 22:04:13,782 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8155844155844156 [2022-07-13 22:04:13,782 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3768 transitions. [2022-07-13 22:04:13,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3768 transitions. [2022-07-13 22:04:13,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:13,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3768 transitions. [2022-07-13 22:04:13,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.27272727272728) internal successors, (3768), 22 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:13,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:13,794 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:13,794 INFO L186 Difference]: Start difference. First operand has 253 places, 209 transitions, 671 flow. Second operand 22 states and 3768 transitions. [2022-07-13 22:04:13,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 266 transitions, 1383 flow [2022-07-13 22:04:13,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 266 transitions, 1128 flow, removed 126 selfloop flow, removed 10 redundant places. [2022-07-13 22:04:13,806 INFO L242 Difference]: Finished difference. Result has 261 places, 219 transitions, 758 flow [2022-07-13 22:04:13,807 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=758, PETRI_PLACES=261, PETRI_TRANSITIONS=219} [2022-07-13 22:04:13,807 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 74 predicate places. [2022-07-13 22:04:13,807 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 219 transitions, 758 flow [2022-07-13 22:04:13,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:13,808 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:13,808 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:13,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:04:13,809 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:13,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:13,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1894136750, now seen corresponding path program 4 times [2022-07-13 22:04:13,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:13,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733465051] [2022-07-13 22:04:13,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:13,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:13,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:13,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:13,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733465051] [2022-07-13 22:04:13,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733465051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:13,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:13,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:13,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211539241] [2022-07-13 22:04:13,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:13,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:13,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:13,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:13,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:13,925 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:13,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 219 transitions, 758 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:13,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:13,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:13,927 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:14,257 INFO L129 PetriNetUnfolder]: 173/1191 cut-off events. [2022-07-13 22:04:14,257 INFO L130 PetriNetUnfolder]: For 2873/2890 co-relation queries the response was YES. [2022-07-13 22:04:14,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3117 conditions, 1191 events. 173/1191 cut-off events. For 2873/2890 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 9198 event pairs, 101 based on Foata normal form. 2/1132 useless extension candidates. Maximal degree in co-relation 2970. Up to 329 conditions per place. [2022-07-13 22:04:14,266 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 60 selfloop transitions, 17 changer transitions 28/274 dead transitions. [2022-07-13 22:04:14,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 274 transitions, 1465 flow [2022-07-13 22:04:14,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 22:04:14,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-13 22:04:14,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3603 transitions. [2022-07-13 22:04:14,272 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8170068027210884 [2022-07-13 22:04:14,272 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3603 transitions. [2022-07-13 22:04:14,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3603 transitions. [2022-07-13 22:04:14,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:14,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3603 transitions. [2022-07-13 22:04:14,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.57142857142858) internal successors, (3603), 21 states have internal predecessors, (3603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:14,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:14,283 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:14,283 INFO L186 Difference]: Start difference. First operand has 261 places, 219 transitions, 758 flow. Second operand 21 states and 3603 transitions. [2022-07-13 22:04:14,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 274 transitions, 1465 flow [2022-07-13 22:04:14,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 274 transitions, 1315 flow, removed 75 selfloop flow, removed 17 redundant places. [2022-07-13 22:04:14,294 INFO L242 Difference]: Finished difference. Result has 267 places, 229 transitions, 916 flow [2022-07-13 22:04:14,295 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=916, PETRI_PLACES=267, PETRI_TRANSITIONS=229} [2022-07-13 22:04:14,295 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 80 predicate places. [2022-07-13 22:04:14,295 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 229 transitions, 916 flow [2022-07-13 22:04:14,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:14,296 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:14,296 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:14,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 22:04:14,296 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:14,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:14,297 INFO L85 PathProgramCache]: Analyzing trace with hash -841789276, now seen corresponding path program 5 times [2022-07-13 22:04:14,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:14,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756954423] [2022-07-13 22:04:14,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:14,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:14,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:14,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:14,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756954423] [2022-07-13 22:04:14,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756954423] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:14,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:14,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:14,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855276946] [2022-07-13 22:04:14,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:14,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:14,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:14,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:14,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:14,399 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:14,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 229 transitions, 916 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:14,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:14,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:14,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:14,693 INFO L129 PetriNetUnfolder]: 169/1221 cut-off events. [2022-07-13 22:04:14,693 INFO L130 PetriNetUnfolder]: For 2708/2731 co-relation queries the response was YES. [2022-07-13 22:04:14,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3127 conditions, 1221 events. 169/1221 cut-off events. For 2708/2731 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 9568 event pairs, 106 based on Foata normal form. 1/1166 useless extension candidates. Maximal degree in co-relation 3009. Up to 317 conditions per place. [2022-07-13 22:04:14,704 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 59 selfloop transitions, 23 changer transitions 28/279 dead transitions. [2022-07-13 22:04:14,704 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 279 transitions, 1689 flow [2022-07-13 22:04:14,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:04:14,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-13 22:04:14,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3433 transitions. [2022-07-13 22:04:14,707 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8173809523809524 [2022-07-13 22:04:14,707 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3433 transitions. [2022-07-13 22:04:14,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3433 transitions. [2022-07-13 22:04:14,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:14,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3433 transitions. [2022-07-13 22:04:14,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.65) internal successors, (3433), 20 states have internal predecessors, (3433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:14,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:14,716 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:14,716 INFO L186 Difference]: Start difference. First operand has 267 places, 229 transitions, 916 flow. Second operand 20 states and 3433 transitions. [2022-07-13 22:04:14,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 279 transitions, 1689 flow [2022-07-13 22:04:14,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 279 transitions, 1567 flow, removed 56 selfloop flow, removed 10 redundant places. [2022-07-13 22:04:14,731 INFO L242 Difference]: Finished difference. Result has 280 places, 237 transitions, 1092 flow [2022-07-13 22:04:14,731 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1092, PETRI_PLACES=280, PETRI_TRANSITIONS=237} [2022-07-13 22:04:14,732 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 93 predicate places. [2022-07-13 22:04:14,732 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 237 transitions, 1092 flow [2022-07-13 22:04:14,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:14,733 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:14,733 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:14,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 22:04:14,733 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:14,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:14,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1787339340, now seen corresponding path program 6 times [2022-07-13 22:04:14,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:14,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063280423] [2022-07-13 22:04:14,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:14,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:14,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:14,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:14,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063280423] [2022-07-13 22:04:14,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063280423] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:14,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:14,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:14,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405315894] [2022-07-13 22:04:14,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:14,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:14,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:14,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:14,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:14,845 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:14,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 237 transitions, 1092 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:14,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:14,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:14,846 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:15,131 INFO L129 PetriNetUnfolder]: 164/1194 cut-off events. [2022-07-13 22:04:15,131 INFO L130 PetriNetUnfolder]: For 3429/3453 co-relation queries the response was YES. [2022-07-13 22:04:15,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3249 conditions, 1194 events. 164/1194 cut-off events. For 3429/3453 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9313 event pairs, 98 based on Foata normal form. 1/1133 useless extension candidates. Maximal degree in co-relation 3102. Up to 340 conditions per place. [2022-07-13 22:04:15,145 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 68 selfloop transitions, 22 changer transitions 32/291 dead transitions. [2022-07-13 22:04:15,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 291 transitions, 1994 flow [2022-07-13 22:04:15,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:04:15,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-13 22:04:15,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3429 transitions. [2022-07-13 22:04:15,150 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8164285714285714 [2022-07-13 22:04:15,150 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3429 transitions. [2022-07-13 22:04:15,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3429 transitions. [2022-07-13 22:04:15,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:15,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3429 transitions. [2022-07-13 22:04:15,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.45) internal successors, (3429), 20 states have internal predecessors, (3429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:15,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:15,161 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:15,161 INFO L186 Difference]: Start difference. First operand has 280 places, 237 transitions, 1092 flow. Second operand 20 states and 3429 transitions. [2022-07-13 22:04:15,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 291 transitions, 1994 flow [2022-07-13 22:04:15,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 291 transitions, 1848 flow, removed 62 selfloop flow, removed 10 redundant places. [2022-07-13 22:04:15,184 INFO L242 Difference]: Finished difference. Result has 292 places, 244 transitions, 1215 flow [2022-07-13 22:04:15,185 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1215, PETRI_PLACES=292, PETRI_TRANSITIONS=244} [2022-07-13 22:04:15,185 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 105 predicate places. [2022-07-13 22:04:15,185 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 244 transitions, 1215 flow [2022-07-13 22:04:15,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:15,186 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:15,186 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:15,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 22:04:15,187 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:15,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:15,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1332304252, now seen corresponding path program 7 times [2022-07-13 22:04:15,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:15,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004358267] [2022-07-13 22:04:15,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:15,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:15,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:15,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004358267] [2022-07-13 22:04:15,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004358267] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:15,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:15,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:15,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834668025] [2022-07-13 22:04:15,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:15,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:15,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:15,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:15,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:15,308 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:15,309 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 244 transitions, 1215 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:15,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:15,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:15,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:15,583 INFO L129 PetriNetUnfolder]: 159/1156 cut-off events. [2022-07-13 22:04:15,584 INFO L130 PetriNetUnfolder]: For 3307/3333 co-relation queries the response was YES. [2022-07-13 22:04:15,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3139 conditions, 1156 events. 159/1156 cut-off events. For 3307/3333 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 8922 event pairs, 91 based on Foata normal form. 7/1105 useless extension candidates. Maximal degree in co-relation 2977. Up to 330 conditions per place. [2022-07-13 22:04:15,595 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 67 selfloop transitions, 27 changer transitions 22/285 dead transitions. [2022-07-13 22:04:15,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 285 transitions, 1955 flow [2022-07-13 22:04:15,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:04:15,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:04:15,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3088 transitions. [2022-07-13 22:04:15,598 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.816931216931217 [2022-07-13 22:04:15,598 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3088 transitions. [2022-07-13 22:04:15,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3088 transitions. [2022-07-13 22:04:15,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:15,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3088 transitions. [2022-07-13 22:04:15,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.55555555555554) internal successors, (3088), 18 states have internal predecessors, (3088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:15,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:15,605 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:15,606 INFO L186 Difference]: Start difference. First operand has 292 places, 244 transitions, 1215 flow. Second operand 18 states and 3088 transitions. [2022-07-13 22:04:15,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 285 transitions, 1955 flow [2022-07-13 22:04:15,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 285 transitions, 1790 flow, removed 59 selfloop flow, removed 14 redundant places. [2022-07-13 22:04:15,647 INFO L242 Difference]: Finished difference. Result has 292 places, 251 transitions, 1305 flow [2022-07-13 22:04:15,647 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1305, PETRI_PLACES=292, PETRI_TRANSITIONS=251} [2022-07-13 22:04:15,648 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 105 predicate places. [2022-07-13 22:04:15,648 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 251 transitions, 1305 flow [2022-07-13 22:04:15,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:15,649 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:15,649 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:15,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 22:04:15,650 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:15,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:15,650 INFO L85 PathProgramCache]: Analyzing trace with hash -634262104, now seen corresponding path program 8 times [2022-07-13 22:04:15,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:15,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090754605] [2022-07-13 22:04:15,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:15,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:15,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:15,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:15,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090754605] [2022-07-13 22:04:15,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090754605] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:15,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:15,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:15,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35578814] [2022-07-13 22:04:15,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:15,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:15,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:15,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:15,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:15,736 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:15,737 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 251 transitions, 1305 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:15,737 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:15,737 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:15,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:15,987 INFO L129 PetriNetUnfolder]: 149/1118 cut-off events. [2022-07-13 22:04:15,988 INFO L130 PetriNetUnfolder]: For 2822/2850 co-relation queries the response was YES. [2022-07-13 22:04:16,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2988 conditions, 1118 events. 149/1118 cut-off events. For 2822/2850 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 8537 event pairs, 91 based on Foata normal form. 7/1067 useless extension candidates. Maximal degree in co-relation 2829. Up to 324 conditions per place. [2022-07-13 22:04:16,017 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 61 selfloop transitions, 14 changer transitions 30/274 dead transitions. [2022-07-13 22:04:16,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 274 transitions, 1785 flow [2022-07-13 22:04:16,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:04:16,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:04:16,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2747 transitions. [2022-07-13 22:04:16,020 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8175595238095238 [2022-07-13 22:04:16,020 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2747 transitions. [2022-07-13 22:04:16,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2747 transitions. [2022-07-13 22:04:16,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:16,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2747 transitions. [2022-07-13 22:04:16,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.6875) internal successors, (2747), 16 states have internal predecessors, (2747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,026 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,026 INFO L186 Difference]: Start difference. First operand has 292 places, 251 transitions, 1305 flow. Second operand 16 states and 2747 transitions. [2022-07-13 22:04:16,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 274 transitions, 1785 flow [2022-07-13 22:04:16,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 274 transitions, 1716 flow, removed 24 selfloop flow, removed 8 redundant places. [2022-07-13 22:04:16,041 INFO L242 Difference]: Finished difference. Result has 295 places, 235 transitions, 1060 flow [2022-07-13 22:04:16,041 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1060, PETRI_PLACES=295, PETRI_TRANSITIONS=235} [2022-07-13 22:04:16,042 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 108 predicate places. [2022-07-13 22:04:16,042 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 235 transitions, 1060 flow [2022-07-13 22:04:16,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,043 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:16,043 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:16,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 22:04:16,043 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:16,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:16,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1061997622, now seen corresponding path program 9 times [2022-07-13 22:04:16,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:16,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221351119] [2022-07-13 22:04:16,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:16,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:16,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:16,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:16,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221351119] [2022-07-13 22:04:16,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221351119] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:16,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:16,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:16,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466225708] [2022-07-13 22:04:16,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:16,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:16,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:16,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:16,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:16,125 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:16,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 235 transitions, 1060 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:16,127 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:16,127 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:16,466 INFO L129 PetriNetUnfolder]: 152/1116 cut-off events. [2022-07-13 22:04:16,466 INFO L130 PetriNetUnfolder]: For 2893/2917 co-relation queries the response was YES. [2022-07-13 22:04:16,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2965 conditions, 1116 events. 152/1116 cut-off events. For 2893/2917 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 8455 event pairs, 95 based on Foata normal form. 3/1060 useless extension candidates. Maximal degree in co-relation 2907. Up to 324 conditions per place. [2022-07-13 22:04:16,475 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 58 selfloop transitions, 23 changer transitions 21/271 dead transitions. [2022-07-13 22:04:16,475 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 271 transitions, 1714 flow [2022-07-13 22:04:16,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:04:16,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:04:16,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3089 transitions. [2022-07-13 22:04:16,480 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8171957671957671 [2022-07-13 22:04:16,480 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3089 transitions. [2022-07-13 22:04:16,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3089 transitions. [2022-07-13 22:04:16,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:16,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3089 transitions. [2022-07-13 22:04:16,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.61111111111111) internal successors, (3089), 18 states have internal predecessors, (3089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,489 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,489 INFO L186 Difference]: Start difference. First operand has 295 places, 235 transitions, 1060 flow. Second operand 18 states and 3089 transitions. [2022-07-13 22:04:16,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 271 transitions, 1714 flow [2022-07-13 22:04:16,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 271 transitions, 1586 flow, removed 25 selfloop flow, removed 16 redundant places. [2022-07-13 22:04:16,504 INFO L242 Difference]: Finished difference. Result has 284 places, 244 transitions, 1201 flow [2022-07-13 22:04:16,505 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=990, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1201, PETRI_PLACES=284, PETRI_TRANSITIONS=244} [2022-07-13 22:04:16,505 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 97 predicate places. [2022-07-13 22:04:16,506 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 244 transitions, 1201 flow [2022-07-13 22:04:16,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,506 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:16,506 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:16,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 22:04:16,507 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:16,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:16,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1404461984, now seen corresponding path program 10 times [2022-07-13 22:04:16,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:16,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159168532] [2022-07-13 22:04:16,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:16,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:16,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:16,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:16,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159168532] [2022-07-13 22:04:16,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159168532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:16,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:16,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:16,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808856144] [2022-07-13 22:04:16,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:16,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:16,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:16,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:16,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:16,603 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:16,604 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 244 transitions, 1201 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,604 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:16,604 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:16,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:16,868 INFO L129 PetriNetUnfolder]: 149/1139 cut-off events. [2022-07-13 22:04:16,868 INFO L130 PetriNetUnfolder]: For 2428/2447 co-relation queries the response was YES. [2022-07-13 22:04:16,875 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2935 conditions, 1139 events. 149/1139 cut-off events. For 2428/2447 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8744 event pairs, 96 based on Foata normal form. 1/1080 useless extension candidates. Maximal degree in co-relation 2880. Up to 324 conditions per place. [2022-07-13 22:04:16,878 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 59 selfloop transitions, 24 changer transitions 22/274 dead transitions. [2022-07-13 22:04:16,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 274 transitions, 1780 flow [2022-07-13 22:04:16,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:04:16,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:04:16,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2921 transitions. [2022-07-13 22:04:16,881 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8182072829131652 [2022-07-13 22:04:16,881 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2921 transitions. [2022-07-13 22:04:16,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2921 transitions. [2022-07-13 22:04:16,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:16,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2921 transitions. [2022-07-13 22:04:16,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.8235294117647) internal successors, (2921), 17 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,907 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,907 INFO L186 Difference]: Start difference. First operand has 284 places, 244 transitions, 1201 flow. Second operand 17 states and 2921 transitions. [2022-07-13 22:04:16,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 274 transitions, 1780 flow [2022-07-13 22:04:16,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 274 transitions, 1737 flow, removed 16 selfloop flow, removed 5 redundant places. [2022-07-13 22:04:16,921 INFO L242 Difference]: Finished difference. Result has 295 places, 247 transitions, 1304 flow [2022-07-13 22:04:16,921 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1304, PETRI_PLACES=295, PETRI_TRANSITIONS=247} [2022-07-13 22:04:16,921 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 108 predicate places. [2022-07-13 22:04:16,921 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 247 transitions, 1304 flow [2022-07-13 22:04:16,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,922 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:16,922 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:16,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 22:04:16,922 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:16,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:16,923 INFO L85 PathProgramCache]: Analyzing trace with hash 2017029460, now seen corresponding path program 11 times [2022-07-13 22:04:16,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:16,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569601048] [2022-07-13 22:04:16,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:16,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:16,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:17,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:17,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569601048] [2022-07-13 22:04:17,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569601048] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:17,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:17,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:17,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287459665] [2022-07-13 22:04:17,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:17,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:17,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:17,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:17,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:17,002 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:17,003 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 247 transitions, 1304 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:17,003 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:17,003 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:17,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:17,245 INFO L129 PetriNetUnfolder]: 146/1118 cut-off events. [2022-07-13 22:04:17,246 INFO L130 PetriNetUnfolder]: For 2580/2602 co-relation queries the response was YES. [2022-07-13 22:04:17,252 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2906 conditions, 1118 events. 146/1118 cut-off events. For 2580/2602 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 8501 event pairs, 94 based on Foata normal form. 3/1061 useless extension candidates. Maximal degree in co-relation 2846. Up to 324 conditions per place. [2022-07-13 22:04:17,255 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 58 selfloop transitions, 15 changer transitions 29/271 dead transitions. [2022-07-13 22:04:17,255 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 271 transitions, 1767 flow [2022-07-13 22:04:17,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:04:17,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:04:17,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3088 transitions. [2022-07-13 22:04:17,258 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.816931216931217 [2022-07-13 22:04:17,258 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3088 transitions. [2022-07-13 22:04:17,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3088 transitions. [2022-07-13 22:04:17,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:17,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3088 transitions. [2022-07-13 22:04:17,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.55555555555554) internal successors, (3088), 18 states have internal predecessors, (3088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:17,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:17,265 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:17,265 INFO L186 Difference]: Start difference. First operand has 295 places, 247 transitions, 1304 flow. Second operand 18 states and 3088 transitions. [2022-07-13 22:04:17,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 271 transitions, 1767 flow [2022-07-13 22:04:17,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 271 transitions, 1678 flow, removed 23 selfloop flow, removed 7 redundant places. [2022-07-13 22:04:17,281 INFO L242 Difference]: Finished difference. Result has 305 places, 238 transitions, 1138 flow [2022-07-13 22:04:17,282 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1138, PETRI_PLACES=305, PETRI_TRANSITIONS=238} [2022-07-13 22:04:17,282 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 118 predicate places. [2022-07-13 22:04:17,282 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 238 transitions, 1138 flow [2022-07-13 22:04:17,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:17,283 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:17,283 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:17,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 22:04:17,283 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:17,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:17,284 INFO L85 PathProgramCache]: Analyzing trace with hash 2112829846, now seen corresponding path program 12 times [2022-07-13 22:04:17,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:17,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458204818] [2022-07-13 22:04:17,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:17,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:17,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:17,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458204818] [2022-07-13 22:04:17,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458204818] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:17,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:17,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:17,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476042612] [2022-07-13 22:04:17,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:17,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:17,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:17,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:17,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:17,371 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:17,372 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 238 transitions, 1138 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:17,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:17,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:17,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:17,582 INFO L129 PetriNetUnfolder]: 136/1071 cut-off events. [2022-07-13 22:04:17,583 INFO L130 PetriNetUnfolder]: For 2294/2316 co-relation queries the response was YES. [2022-07-13 22:04:17,588 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2665 conditions, 1071 events. 136/1071 cut-off events. For 2294/2316 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 8002 event pairs, 92 based on Foata normal form. 3/1016 useless extension candidates. Maximal degree in co-relation 2602. Up to 311 conditions per place. [2022-07-13 22:04:17,591 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 49 selfloop transitions, 3 changer transitions 34/255 dead transitions. [2022-07-13 22:04:17,591 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 255 transitions, 1460 flow [2022-07-13 22:04:17,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:04:17,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:04:17,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2912 transitions. [2022-07-13 22:04:17,595 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8156862745098039 [2022-07-13 22:04:17,595 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2912 transitions. [2022-07-13 22:04:17,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2912 transitions. [2022-07-13 22:04:17,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:17,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2912 transitions. [2022-07-13 22:04:17,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.2941176470588) internal successors, (2912), 17 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:17,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:17,603 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:17,603 INFO L186 Difference]: Start difference. First operand has 305 places, 238 transitions, 1138 flow. Second operand 17 states and 2912 transitions. [2022-07-13 22:04:17,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 255 transitions, 1460 flow [2022-07-13 22:04:17,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 255 transitions, 1334 flow, removed 27 selfloop flow, removed 22 redundant places. [2022-07-13 22:04:17,617 INFO L242 Difference]: Finished difference. Result has 287 places, 218 transitions, 777 flow [2022-07-13 22:04:17,617 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=777, PETRI_PLACES=287, PETRI_TRANSITIONS=218} [2022-07-13 22:04:17,618 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 100 predicate places. [2022-07-13 22:04:17,618 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 218 transitions, 777 flow [2022-07-13 22:04:17,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:17,618 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:17,619 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:17,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 22:04:17,619 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:17,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:17,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1779128098, now seen corresponding path program 13 times [2022-07-13 22:04:17,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:17,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024940816] [2022-07-13 22:04:17,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:17,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:17,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:17,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024940816] [2022-07-13 22:04:17,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024940816] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:17,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:17,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:17,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807135058] [2022-07-13 22:04:17,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:17,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:17,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:17,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:17,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:17,687 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:17,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 218 transitions, 777 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:17,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:17,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:17,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:17,995 INFO L129 PetriNetUnfolder]: 141/1110 cut-off events. [2022-07-13 22:04:17,995 INFO L130 PetriNetUnfolder]: For 2085/2099 co-relation queries the response was YES. [2022-07-13 22:04:18,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2651 conditions, 1110 events. 141/1110 cut-off events. For 2085/2099 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8451 event pairs, 87 based on Foata normal form. 1/1057 useless extension candidates. Maximal degree in co-relation 2598. Up to 291 conditions per place. [2022-07-13 22:04:18,012 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 55 selfloop transitions, 19 changer transitions 28/271 dead transitions. [2022-07-13 22:04:18,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 271 transitions, 1568 flow [2022-07-13 22:04:18,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:04:18,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-13 22:04:18,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3765 transitions. [2022-07-13 22:04:18,015 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.814935064935065 [2022-07-13 22:04:18,015 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3765 transitions. [2022-07-13 22:04:18,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3765 transitions. [2022-07-13 22:04:18,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:18,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3765 transitions. [2022-07-13 22:04:18,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.13636363636363) internal successors, (3765), 22 states have internal predecessors, (3765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,024 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,024 INFO L186 Difference]: Start difference. First operand has 287 places, 218 transitions, 777 flow. Second operand 22 states and 3765 transitions. [2022-07-13 22:04:18,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 271 transitions, 1568 flow [2022-07-13 22:04:18,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 271 transitions, 1342 flow, removed 40 selfloop flow, removed 24 redundant places. [2022-07-13 22:04:18,034 INFO L242 Difference]: Finished difference. Result has 269 places, 229 transitions, 884 flow [2022-07-13 22:04:18,034 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=884, PETRI_PLACES=269, PETRI_TRANSITIONS=229} [2022-07-13 22:04:18,034 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 82 predicate places. [2022-07-13 22:04:18,034 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 229 transitions, 884 flow [2022-07-13 22:04:18,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,035 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:18,035 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:18,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 22:04:18,035 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:18,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:18,036 INFO L85 PathProgramCache]: Analyzing trace with hash 841188992, now seen corresponding path program 14 times [2022-07-13 22:04:18,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:18,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065153280] [2022-07-13 22:04:18,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:18,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:18,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:18,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:18,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065153280] [2022-07-13 22:04:18,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065153280] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:18,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:18,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:18,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058017266] [2022-07-13 22:04:18,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:18,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:18,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:18,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:18,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:18,113 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:18,113 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 229 transitions, 884 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:18,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:18,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:18,416 INFO L129 PetriNetUnfolder]: 138/1076 cut-off events. [2022-07-13 22:04:18,417 INFO L130 PetriNetUnfolder]: For 1641/1655 co-relation queries the response was YES. [2022-07-13 22:04:18,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2578 conditions, 1076 events. 138/1076 cut-off events. For 1641/1655 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 8104 event pairs, 88 based on Foata normal form. 1/1021 useless extension candidates. Maximal degree in co-relation 2529. Up to 289 conditions per place. [2022-07-13 22:04:18,425 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 51 selfloop transitions, 21 changer transitions 28/269 dead transitions. [2022-07-13 22:04:18,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 269 transitions, 1527 flow [2022-07-13 22:04:18,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 22:04:18,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-13 22:04:18,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3595 transitions. [2022-07-13 22:04:18,427 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8151927437641724 [2022-07-13 22:04:18,428 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3595 transitions. [2022-07-13 22:04:18,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3595 transitions. [2022-07-13 22:04:18,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:18,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3595 transitions. [2022-07-13 22:04:18,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.1904761904762) internal successors, (3595), 21 states have internal predecessors, (3595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,434 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,435 INFO L186 Difference]: Start difference. First operand has 269 places, 229 transitions, 884 flow. Second operand 21 states and 3595 transitions. [2022-07-13 22:04:18,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 269 transitions, 1527 flow [2022-07-13 22:04:18,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 269 transitions, 1435 flow, removed 40 selfloop flow, removed 11 redundant places. [2022-07-13 22:04:18,468 INFO L242 Difference]: Finished difference. Result has 278 places, 231 transitions, 977 flow [2022-07-13 22:04:18,469 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=977, PETRI_PLACES=278, PETRI_TRANSITIONS=231} [2022-07-13 22:04:18,469 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 91 predicate places. [2022-07-13 22:04:18,469 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 231 transitions, 977 flow [2022-07-13 22:04:18,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,469 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:18,470 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:18,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 22:04:18,470 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:18,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:18,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1052917516, now seen corresponding path program 15 times [2022-07-13 22:04:18,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:18,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741642681] [2022-07-13 22:04:18,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:18,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:18,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:18,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:18,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741642681] [2022-07-13 22:04:18,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741642681] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:18,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:18,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:18,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547492120] [2022-07-13 22:04:18,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:18,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:18,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:18,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:18,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:18,542 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:18,543 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 231 transitions, 977 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,543 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:18,543 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:18,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:18,799 INFO L129 PetriNetUnfolder]: 135/1085 cut-off events. [2022-07-13 22:04:18,800 INFO L130 PetriNetUnfolder]: For 1994/2008 co-relation queries the response was YES. [2022-07-13 22:04:18,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2659 conditions, 1085 events. 135/1085 cut-off events. For 1994/2008 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8190 event pairs, 85 based on Foata normal form. 1/1031 useless extension candidates. Maximal degree in co-relation 2606. Up to 294 conditions per place. [2022-07-13 22:04:18,808 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 51 selfloop transitions, 22 changer transitions 25/267 dead transitions. [2022-07-13 22:04:18,808 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 267 transitions, 1576 flow [2022-07-13 22:04:18,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:04:18,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:04:18,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2752 transitions. [2022-07-13 22:04:18,811 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.819047619047619 [2022-07-13 22:04:18,811 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2752 transitions. [2022-07-13 22:04:18,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2752 transitions. [2022-07-13 22:04:18,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:18,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2752 transitions. [2022-07-13 22:04:18,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 172.0) internal successors, (2752), 16 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,816 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,816 INFO L186 Difference]: Start difference. First operand has 278 places, 231 transitions, 977 flow. Second operand 16 states and 2752 transitions. [2022-07-13 22:04:18,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 267 transitions, 1576 flow [2022-07-13 22:04:18,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 267 transitions, 1449 flow, removed 38 selfloop flow, removed 15 redundant places. [2022-07-13 22:04:18,828 INFO L242 Difference]: Finished difference. Result has 274 places, 236 transitions, 1046 flow [2022-07-13 22:04:18,828 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1046, PETRI_PLACES=274, PETRI_TRANSITIONS=236} [2022-07-13 22:04:18,828 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 87 predicate places. [2022-07-13 22:04:18,829 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 236 transitions, 1046 flow [2022-07-13 22:04:18,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,829 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:18,829 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:18,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 22:04:18,829 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:18,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:18,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2048698328, now seen corresponding path program 16 times [2022-07-13 22:04:18,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:18,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183127939] [2022-07-13 22:04:18,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:18,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:18,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:18,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:18,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183127939] [2022-07-13 22:04:18,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183127939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:18,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:18,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:18,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950342240] [2022-07-13 22:04:18,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:18,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:18,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:18,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:18,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:18,897 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:18,898 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 236 transitions, 1046 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:18,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:18,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:19,121 INFO L129 PetriNetUnfolder]: 126/1017 cut-off events. [2022-07-13 22:04:19,121 INFO L130 PetriNetUnfolder]: For 1638/1652 co-relation queries the response was YES. [2022-07-13 22:04:19,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2442 conditions, 1017 events. 126/1017 cut-off events. For 1638/1652 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7469 event pairs, 85 based on Foata normal form. 1/963 useless extension candidates. Maximal degree in co-relation 2392. Up to 288 conditions per place. [2022-07-13 22:04:19,128 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 47 selfloop transitions, 10 changer transitions 30/256 dead transitions. [2022-07-13 22:04:19,128 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 256 transitions, 1403 flow [2022-07-13 22:04:19,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:04:19,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:04:19,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3082 transitions. [2022-07-13 22:04:19,131 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8153439153439154 [2022-07-13 22:04:19,131 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3082 transitions. [2022-07-13 22:04:19,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3082 transitions. [2022-07-13 22:04:19,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:19,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3082 transitions. [2022-07-13 22:04:19,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.22222222222223) internal successors, (3082), 18 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,148 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,148 INFO L186 Difference]: Start difference. First operand has 274 places, 236 transitions, 1046 flow. Second operand 18 states and 3082 transitions. [2022-07-13 22:04:19,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 256 transitions, 1403 flow [2022-07-13 22:04:19,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 256 transitions, 1309 flow, removed 25 selfloop flow, removed 10 redundant places. [2022-07-13 22:04:19,158 INFO L242 Difference]: Finished difference. Result has 281 places, 221 transitions, 820 flow [2022-07-13 22:04:19,158 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=820, PETRI_PLACES=281, PETRI_TRANSITIONS=221} [2022-07-13 22:04:19,159 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 94 predicate places. [2022-07-13 22:04:19,159 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 221 transitions, 820 flow [2022-07-13 22:04:19,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,159 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:19,160 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:19,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 22:04:19,160 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:19,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:19,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1739090500, now seen corresponding path program 17 times [2022-07-13 22:04:19,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:19,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539377119] [2022-07-13 22:04:19,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:19,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:19,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:19,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:19,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539377119] [2022-07-13 22:04:19,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539377119] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:19,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:19,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:19,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495189419] [2022-07-13 22:04:19,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:19,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:19,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:19,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:19,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:19,231 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:19,231 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 221 transitions, 820 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:19,232 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:19,232 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:19,476 INFO L129 PetriNetUnfolder]: 131/1041 cut-off events. [2022-07-13 22:04:19,476 INFO L130 PetriNetUnfolder]: For 1648/1662 co-relation queries the response was YES. [2022-07-13 22:04:19,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2488 conditions, 1041 events. 131/1041 cut-off events. For 1648/1662 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7727 event pairs, 86 based on Foata normal form. 1/986 useless extension candidates. Maximal degree in co-relation 2438. Up to 288 conditions per place. [2022-07-13 22:04:19,484 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 45 selfloop transitions, 20 changer transitions 23/257 dead transitions. [2022-07-13 22:04:19,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 257 transitions, 1398 flow [2022-07-13 22:04:19,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:04:19,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:04:19,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3087 transitions. [2022-07-13 22:04:19,486 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-07-13 22:04:19,487 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3087 transitions. [2022-07-13 22:04:19,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3087 transitions. [2022-07-13 22:04:19,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:19,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3087 transitions. [2022-07-13 22:04:19,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.5) internal successors, (3087), 18 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,492 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,492 INFO L186 Difference]: Start difference. First operand has 281 places, 221 transitions, 820 flow. Second operand 18 states and 3087 transitions. [2022-07-13 22:04:19,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 257 transitions, 1398 flow [2022-07-13 22:04:19,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 257 transitions, 1271 flow, removed 24 selfloop flow, removed 17 redundant places. [2022-07-13 22:04:19,502 INFO L242 Difference]: Finished difference. Result has 267 places, 230 transitions, 956 flow [2022-07-13 22:04:19,502 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=956, PETRI_PLACES=267, PETRI_TRANSITIONS=230} [2022-07-13 22:04:19,502 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 80 predicate places. [2022-07-13 22:04:19,502 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 230 transitions, 956 flow [2022-07-13 22:04:19,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,503 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:19,503 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:19,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 22:04:19,503 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:19,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:19,504 INFO L85 PathProgramCache]: Analyzing trace with hash 727369106, now seen corresponding path program 18 times [2022-07-13 22:04:19,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:19,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545327483] [2022-07-13 22:04:19,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:19,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:19,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:19,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:19,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545327483] [2022-07-13 22:04:19,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545327483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:19,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:19,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:19,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805343977] [2022-07-13 22:04:19,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:19,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:19,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:19,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:19,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:19,585 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:19,585 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 230 transitions, 956 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,586 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:19,586 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:19,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:19,822 INFO L129 PetriNetUnfolder]: 127/1040 cut-off events. [2022-07-13 22:04:19,822 INFO L130 PetriNetUnfolder]: For 1515/1529 co-relation queries the response was YES. [2022-07-13 22:04:19,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2449 conditions, 1040 events. 127/1040 cut-off events. For 1515/1529 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7702 event pairs, 82 based on Foata normal form. 1/987 useless extension candidates. Maximal degree in co-relation 2402. Up to 288 conditions per place. [2022-07-13 22:04:19,829 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 46 selfloop transitions, 22 changer transitions 24/261 dead transitions. [2022-07-13 22:04:19,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 261 transitions, 1471 flow [2022-07-13 22:04:19,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:04:19,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:04:19,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2919 transitions. [2022-07-13 22:04:19,831 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8176470588235294 [2022-07-13 22:04:19,831 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2919 transitions. [2022-07-13 22:04:19,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2919 transitions. [2022-07-13 22:04:19,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:19,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2919 transitions. [2022-07-13 22:04:19,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.7058823529412) internal successors, (2919), 17 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,863 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,863 INFO L186 Difference]: Start difference. First operand has 267 places, 230 transitions, 956 flow. Second operand 17 states and 2919 transitions. [2022-07-13 22:04:19,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 261 transitions, 1471 flow [2022-07-13 22:04:19,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 261 transitions, 1406 flow, removed 28 selfloop flow, removed 5 redundant places. [2022-07-13 22:04:19,873 INFO L242 Difference]: Finished difference. Result has 279 places, 234 transitions, 1060 flow [2022-07-13 22:04:19,874 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1060, PETRI_PLACES=279, PETRI_TRANSITIONS=234} [2022-07-13 22:04:19,874 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 92 predicate places. [2022-07-13 22:04:19,874 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 234 transitions, 1060 flow [2022-07-13 22:04:19,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,875 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:19,875 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:19,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 22:04:19,875 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:19,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:19,875 INFO L85 PathProgramCache]: Analyzing trace with hash 2024116528, now seen corresponding path program 19 times [2022-07-13 22:04:19,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:19,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862209662] [2022-07-13 22:04:19,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:19,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:19,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:19,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862209662] [2022-07-13 22:04:19,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862209662] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:19,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:19,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:19,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050845390] [2022-07-13 22:04:19,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:19,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:19,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:19,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:19,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:19,972 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:19,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 234 transitions, 1060 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:19,973 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:19,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:20,200 INFO L129 PetriNetUnfolder]: 121/1019 cut-off events. [2022-07-13 22:04:20,201 INFO L130 PetriNetUnfolder]: For 1482/1496 co-relation queries the response was YES. [2022-07-13 22:04:20,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2394 conditions, 1019 events. 121/1019 cut-off events. For 1482/1496 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7533 event pairs, 82 based on Foata normal form. 1/966 useless extension candidates. Maximal degree in co-relation 2341. Up to 288 conditions per place. [2022-07-13 22:04:20,207 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 45 selfloop transitions, 12 changer transitions 29/255 dead transitions. [2022-07-13 22:04:20,208 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 255 transitions, 1445 flow [2022-07-13 22:04:20,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:04:20,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:04:20,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2914 transitions. [2022-07-13 22:04:20,211 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8162464985994398 [2022-07-13 22:04:20,211 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2914 transitions. [2022-07-13 22:04:20,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2914 transitions. [2022-07-13 22:04:20,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:20,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2914 transitions. [2022-07-13 22:04:20,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.41176470588235) internal successors, (2914), 17 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:20,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:20,216 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:20,216 INFO L186 Difference]: Start difference. First operand has 279 places, 234 transitions, 1060 flow. Second operand 17 states and 2914 transitions. [2022-07-13 22:04:20,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 255 transitions, 1445 flow [2022-07-13 22:04:20,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 255 transitions, 1352 flow, removed 26 selfloop flow, removed 9 redundant places. [2022-07-13 22:04:20,225 INFO L242 Difference]: Finished difference. Result has 285 places, 225 transitions, 893 flow [2022-07-13 22:04:20,226 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=893, PETRI_PLACES=285, PETRI_TRANSITIONS=225} [2022-07-13 22:04:20,227 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 98 predicate places. [2022-07-13 22:04:20,227 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 225 transitions, 893 flow [2022-07-13 22:04:20,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:20,227 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:20,228 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:20,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 22:04:20,228 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:20,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:20,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1652952068, now seen corresponding path program 20 times [2022-07-13 22:04:20,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:20,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233528321] [2022-07-13 22:04:20,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:20,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:20,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:20,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:20,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233528321] [2022-07-13 22:04:20,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233528321] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:20,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:20,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:20,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860496797] [2022-07-13 22:04:20,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:20,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:20,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:20,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:20,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:20,311 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:20,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 225 transitions, 893 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:20,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:20,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:20,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:20,532 INFO L129 PetriNetUnfolder]: 113/913 cut-off events. [2022-07-13 22:04:20,532 INFO L130 PetriNetUnfolder]: For 1155/1169 co-relation queries the response was YES. [2022-07-13 22:04:20,536 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2056 conditions, 913 events. 113/913 cut-off events. For 1155/1169 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6440 event pairs, 82 based on Foata normal form. 1/860 useless extension candidates. Maximal degree in co-relation 2003. Up to 266 conditions per place. [2022-07-13 22:04:20,538 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 30 selfloop transitions, 0 changer transitions 39/234 dead transitions. [2022-07-13 22:04:20,538 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 234 transitions, 1097 flow [2022-07-13 22:04:20,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:04:20,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:04:20,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3072 transitions. [2022-07-13 22:04:20,542 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8126984126984127 [2022-07-13 22:04:20,543 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3072 transitions. [2022-07-13 22:04:20,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3072 transitions. [2022-07-13 22:04:20,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:20,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3072 transitions. [2022-07-13 22:04:20,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.66666666666666) internal successors, (3072), 18 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:20,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:20,565 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:20,566 INFO L186 Difference]: Start difference. First operand has 285 places, 225 transitions, 893 flow. Second operand 18 states and 3072 transitions. [2022-07-13 22:04:20,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 234 transitions, 1097 flow [2022-07-13 22:04:20,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 234 transitions, 987 flow, removed 24 selfloop flow, removed 23 redundant places. [2022-07-13 22:04:20,573 INFO L242 Difference]: Finished difference. Result has 266 places, 195 transitions, 521 flow [2022-07-13 22:04:20,573 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=521, PETRI_PLACES=266, PETRI_TRANSITIONS=195} [2022-07-13 22:04:20,574 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 79 predicate places. [2022-07-13 22:04:20,574 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 195 transitions, 521 flow [2022-07-13 22:04:20,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:20,574 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:20,574 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:20,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 22:04:20,574 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:20,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:20,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1536319502, now seen corresponding path program 1 times [2022-07-13 22:04:20,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:20,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140381844] [2022-07-13 22:04:20,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:20,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:20,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:20,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:20,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140381844] [2022-07-13 22:04:20,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140381844] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:20,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:20,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:20,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262102219] [2022-07-13 22:04:20,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:20,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:20,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:20,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:20,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:20,637 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:20,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 195 transitions, 521 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:20,638 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:20,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:20,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:20,895 INFO L129 PetriNetUnfolder]: 157/1039 cut-off events. [2022-07-13 22:04:20,895 INFO L130 PetriNetUnfolder]: For 1156/1167 co-relation queries the response was YES. [2022-07-13 22:04:20,899 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 1039 events. 157/1039 cut-off events. For 1156/1167 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7238 event pairs, 76 based on Foata normal form. 1/984 useless extension candidates. Maximal degree in co-relation 2201. Up to 230 conditions per place. [2022-07-13 22:04:20,901 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 50 selfloop transitions, 12 changer transitions 36/262 dead transitions. [2022-07-13 22:04:20,901 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 262 transitions, 1120 flow [2022-07-13 22:04:20,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:04:20,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-13 22:04:20,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3439 transitions. [2022-07-13 22:04:20,904 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8188095238095238 [2022-07-13 22:04:20,904 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3439 transitions. [2022-07-13 22:04:20,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3439 transitions. [2022-07-13 22:04:20,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:20,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3439 transitions. [2022-07-13 22:04:20,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.95) internal successors, (3439), 20 states have internal predecessors, (3439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:20,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:20,909 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:20,909 INFO L186 Difference]: Start difference. First operand has 266 places, 195 transitions, 521 flow. Second operand 20 states and 3439 transitions. [2022-07-13 22:04:20,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 262 transitions, 1120 flow [2022-07-13 22:04:20,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 262 transitions, 1012 flow, removed 54 selfloop flow, removed 11 redundant places. [2022-07-13 22:04:20,915 INFO L242 Difference]: Finished difference. Result has 248 places, 206 transitions, 642 flow [2022-07-13 22:04:20,915 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=642, PETRI_PLACES=248, PETRI_TRANSITIONS=206} [2022-07-13 22:04:20,916 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 61 predicate places. [2022-07-13 22:04:20,916 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 206 transitions, 642 flow [2022-07-13 22:04:20,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:20,916 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:20,916 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:20,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 22:04:20,917 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:20,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:20,917 INFO L85 PathProgramCache]: Analyzing trace with hash -435224234, now seen corresponding path program 2 times [2022-07-13 22:04:20,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:20,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908053209] [2022-07-13 22:04:20,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:20,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:20,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:20,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:20,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908053209] [2022-07-13 22:04:20,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908053209] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:20,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:20,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:20,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015515332] [2022-07-13 22:04:20,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:20,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:20,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:20,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:20,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:20,972 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:20,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 206 transitions, 642 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:20,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:20,973 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:20,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:21,161 INFO L129 PetriNetUnfolder]: 138/940 cut-off events. [2022-07-13 22:04:21,161 INFO L130 PetriNetUnfolder]: For 1954/1965 co-relation queries the response was YES. [2022-07-13 22:04:21,166 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2350 conditions, 940 events. 138/940 cut-off events. For 1954/1965 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6387 event pairs, 40 based on Foata normal form. 1/895 useless extension candidates. Maximal degree in co-relation 2302. Up to 117 conditions per place. [2022-07-13 22:04:21,167 INFO L132 encePairwiseOnDemand]: 195/210 looper letters, 32 selfloop transitions, 5 changer transitions 66/261 dead transitions. [2022-07-13 22:04:21,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 261 transitions, 1199 flow [2022-07-13 22:04:21,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:04:21,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 22:04:21,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2423 transitions. [2022-07-13 22:04:21,169 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8241496598639456 [2022-07-13 22:04:21,169 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2423 transitions. [2022-07-13 22:04:21,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2423 transitions. [2022-07-13 22:04:21,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:21,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2423 transitions. [2022-07-13 22:04:21,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 173.07142857142858) internal successors, (2423), 14 states have internal predecessors, (2423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:21,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 210.0) internal successors, (3150), 15 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:21,173 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 210.0) internal successors, (3150), 15 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:21,173 INFO L186 Difference]: Start difference. First operand has 248 places, 206 transitions, 642 flow. Second operand 14 states and 2423 transitions. [2022-07-13 22:04:21,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 261 transitions, 1199 flow [2022-07-13 22:04:21,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 261 transitions, 1077 flow, removed 61 selfloop flow, removed 10 redundant places. [2022-07-13 22:04:21,180 INFO L242 Difference]: Finished difference. Result has 249 places, 188 transitions, 529 flow [2022-07-13 22:04:21,180 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=529, PETRI_PLACES=249, PETRI_TRANSITIONS=188} [2022-07-13 22:04:21,181 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 62 predicate places. [2022-07-13 22:04:21,181 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 188 transitions, 529 flow [2022-07-13 22:04:21,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:21,181 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:21,181 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:21,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 22:04:21,181 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:21,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:21,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1613387736, now seen corresponding path program 1 times [2022-07-13 22:04:21,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:21,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753746175] [2022-07-13 22:04:21,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:21,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:21,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:21,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:21,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753746175] [2022-07-13 22:04:21,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753746175] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:21,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:21,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:21,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614938870] [2022-07-13 22:04:21,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:21,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:21,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:21,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:21,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:21,267 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:21,267 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 188 transitions, 529 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:21,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:21,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:21,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:21,514 INFO L129 PetriNetUnfolder]: 114/807 cut-off events. [2022-07-13 22:04:21,514 INFO L130 PetriNetUnfolder]: For 1781/1786 co-relation queries the response was YES. [2022-07-13 22:04:21,518 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1947 conditions, 807 events. 114/807 cut-off events. For 1781/1786 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5090 event pairs, 46 based on Foata normal form. 1/763 useless extension candidates. Maximal degree in co-relation 1898. Up to 145 conditions per place. [2022-07-13 22:04:21,520 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 49 selfloop transitions, 14 changer transitions 25/244 dead transitions. [2022-07-13 22:04:21,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 244 transitions, 1198 flow [2022-07-13 22:04:21,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:04:21,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:04:21,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2755 transitions. [2022-07-13 22:04:21,522 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8199404761904762 [2022-07-13 22:04:21,523 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2755 transitions. [2022-07-13 22:04:21,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2755 transitions. [2022-07-13 22:04:21,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:21,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2755 transitions. [2022-07-13 22:04:21,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 172.1875) internal successors, (2755), 16 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:21,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:21,527 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:21,527 INFO L186 Difference]: Start difference. First operand has 249 places, 188 transitions, 529 flow. Second operand 16 states and 2755 transitions. [2022-07-13 22:04:21,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 244 transitions, 1198 flow [2022-07-13 22:04:21,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 244 transitions, 937 flow, removed 126 selfloop flow, removed 17 redundant places. [2022-07-13 22:04:21,533 INFO L242 Difference]: Finished difference. Result has 238 places, 201 transitions, 637 flow [2022-07-13 22:04:21,533 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=637, PETRI_PLACES=238, PETRI_TRANSITIONS=201} [2022-07-13 22:04:21,533 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 51 predicate places. [2022-07-13 22:04:21,534 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 201 transitions, 637 flow [2022-07-13 22:04:21,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:21,534 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:21,534 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:21,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 22:04:21,534 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:21,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:21,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1854629310, now seen corresponding path program 2 times [2022-07-13 22:04:21,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:21,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512299993] [2022-07-13 22:04:21,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:21,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:21,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:21,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:21,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512299993] [2022-07-13 22:04:21,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512299993] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:21,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:21,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:21,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060784385] [2022-07-13 22:04:21,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:21,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:21,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:21,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:21,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:21,617 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:21,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 201 transitions, 637 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:21,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:21,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:21,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:21,926 INFO L129 PetriNetUnfolder]: 114/789 cut-off events. [2022-07-13 22:04:21,926 INFO L130 PetriNetUnfolder]: For 1250/1253 co-relation queries the response was YES. [2022-07-13 22:04:21,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1860 conditions, 789 events. 114/789 cut-off events. For 1250/1253 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4955 event pairs, 35 based on Foata normal form. 1/753 useless extension candidates. Maximal degree in co-relation 1814. Up to 115 conditions per place. [2022-07-13 22:04:21,930 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 76 selfloop transitions, 11 changer transitions 41/284 dead transitions. [2022-07-13 22:04:21,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 284 transitions, 1438 flow [2022-07-13 22:04:21,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:04:21,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-13 22:04:21,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4121 transitions. [2022-07-13 22:04:21,933 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8176587301587301 [2022-07-13 22:04:21,933 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4121 transitions. [2022-07-13 22:04:21,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4121 transitions. [2022-07-13 22:04:21,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:21,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4121 transitions. [2022-07-13 22:04:21,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.70833333333334) internal successors, (4121), 24 states have internal predecessors, (4121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:21,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:21,939 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:21,939 INFO L186 Difference]: Start difference. First operand has 238 places, 201 transitions, 637 flow. Second operand 24 states and 4121 transitions. [2022-07-13 22:04:21,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 284 transitions, 1438 flow [2022-07-13 22:04:21,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 284 transitions, 1280 flow, removed 78 selfloop flow, removed 9 redundant places. [2022-07-13 22:04:21,945 INFO L242 Difference]: Finished difference. Result has 266 places, 205 transitions, 700 flow [2022-07-13 22:04:21,945 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=700, PETRI_PLACES=266, PETRI_TRANSITIONS=205} [2022-07-13 22:04:21,945 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 79 predicate places. [2022-07-13 22:04:21,946 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 205 transitions, 700 flow [2022-07-13 22:04:21,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:21,946 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:21,946 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:21,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 22:04:21,946 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:21,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:21,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1019128568, now seen corresponding path program 3 times [2022-07-13 22:04:21,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:21,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691752762] [2022-07-13 22:04:21,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:21,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:22,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:22,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:22,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691752762] [2022-07-13 22:04:22,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691752762] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:22,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:22,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:22,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391486243] [2022-07-13 22:04:22,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:22,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:22,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:22,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:22,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:22,011 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:22,012 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 205 transitions, 700 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:22,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:22,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:22,241 INFO L129 PetriNetUnfolder]: 119/809 cut-off events. [2022-07-13 22:04:22,241 INFO L130 PetriNetUnfolder]: For 2499/2502 co-relation queries the response was YES. [2022-07-13 22:04:22,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2221 conditions, 809 events. 119/809 cut-off events. For 2499/2502 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5085 event pairs, 41 based on Foata normal form. 1/769 useless extension candidates. Maximal degree in co-relation 2162. Up to 161 conditions per place. [2022-07-13 22:04:22,247 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 59 selfloop transitions, 20 changer transitions 25/260 dead transitions. [2022-07-13 22:04:22,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 260 transitions, 1481 flow [2022-07-13 22:04:22,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:04:22,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:04:22,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3090 transitions. [2022-07-13 22:04:22,249 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8174603174603174 [2022-07-13 22:04:22,249 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3090 transitions. [2022-07-13 22:04:22,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3090 transitions. [2022-07-13 22:04:22,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:22,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3090 transitions. [2022-07-13 22:04:22,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.66666666666666) internal successors, (3090), 18 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,254 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,254 INFO L186 Difference]: Start difference. First operand has 266 places, 205 transitions, 700 flow. Second operand 18 states and 3090 transitions. [2022-07-13 22:04:22,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 260 transitions, 1481 flow [2022-07-13 22:04:22,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 260 transitions, 1281 flow, removed 97 selfloop flow, removed 15 redundant places. [2022-07-13 22:04:22,262 INFO L242 Difference]: Finished difference. Result has 261 places, 219 transitions, 891 flow [2022-07-13 22:04:22,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=891, PETRI_PLACES=261, PETRI_TRANSITIONS=219} [2022-07-13 22:04:22,263 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 74 predicate places. [2022-07-13 22:04:22,263 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 219 transitions, 891 flow [2022-07-13 22:04:22,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,263 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:22,263 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:22,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 22:04:22,264 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:22,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:22,264 INFO L85 PathProgramCache]: Analyzing trace with hash -95394206, now seen corresponding path program 4 times [2022-07-13 22:04:22,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:22,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251993208] [2022-07-13 22:04:22,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:22,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:22,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:22,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:22,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251993208] [2022-07-13 22:04:22,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251993208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:22,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:22,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:22,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773754626] [2022-07-13 22:04:22,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:22,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:22,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:22,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:22,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:22,330 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:22,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 219 transitions, 891 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:22,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:22,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:22,570 INFO L129 PetriNetUnfolder]: 144/879 cut-off events. [2022-07-13 22:04:22,570 INFO L130 PetriNetUnfolder]: For 2378/2384 co-relation queries the response was YES. [2022-07-13 22:04:22,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2526 conditions, 879 events. 144/879 cut-off events. For 2378/2384 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5688 event pairs, 51 based on Foata normal form. 1/836 useless extension candidates. Maximal degree in co-relation 2470. Up to 154 conditions per place. [2022-07-13 22:04:22,576 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 74 selfloop transitions, 20 changer transitions 33/283 dead transitions. [2022-07-13 22:04:22,576 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 283 transitions, 1771 flow [2022-07-13 22:04:22,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:04:22,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-13 22:04:22,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3435 transitions. [2022-07-13 22:04:22,589 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8178571428571428 [2022-07-13 22:04:22,589 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3435 transitions. [2022-07-13 22:04:22,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3435 transitions. [2022-07-13 22:04:22,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:22,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3435 transitions. [2022-07-13 22:04:22,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.75) internal successors, (3435), 20 states have internal predecessors, (3435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,593 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,593 INFO L186 Difference]: Start difference. First operand has 261 places, 219 transitions, 891 flow. Second operand 20 states and 3435 transitions. [2022-07-13 22:04:22,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 283 transitions, 1771 flow [2022-07-13 22:04:22,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 283 transitions, 1551 flow, removed 106 selfloop flow, removed 11 redundant places. [2022-07-13 22:04:22,603 INFO L242 Difference]: Finished difference. Result has 277 places, 230 transitions, 1012 flow [2022-07-13 22:04:22,603 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1012, PETRI_PLACES=277, PETRI_TRANSITIONS=230} [2022-07-13 22:04:22,603 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 90 predicate places. [2022-07-13 22:04:22,603 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 230 transitions, 1012 flow [2022-07-13 22:04:22,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,603 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:22,604 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:22,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 22:04:22,604 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:22,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:22,604 INFO L85 PathProgramCache]: Analyzing trace with hash -875030552, now seen corresponding path program 5 times [2022-07-13 22:04:22,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:22,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412088330] [2022-07-13 22:04:22,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:22,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:22,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:22,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412088330] [2022-07-13 22:04:22,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412088330] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:22,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:22,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:22,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797800141] [2022-07-13 22:04:22,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:22,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:22,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:22,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:22,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:22,679 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:22,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 230 transitions, 1012 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,680 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:22,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:22,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:22,961 INFO L129 PetriNetUnfolder]: 140/880 cut-off events. [2022-07-13 22:04:22,961 INFO L130 PetriNetUnfolder]: For 2658/2670 co-relation queries the response was YES. [2022-07-13 22:04:22,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2591 conditions, 880 events. 140/880 cut-off events. For 2658/2670 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5785 event pairs, 42 based on Foata normal form. 1/839 useless extension candidates. Maximal degree in co-relation 2528. Up to 116 conditions per place. [2022-07-13 22:04:22,969 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 96 selfloop transitions, 25 changer transitions 42/319 dead transitions. [2022-07-13 22:04:22,969 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 319 transitions, 2236 flow [2022-07-13 22:04:22,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:04:22,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-13 22:04:22,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4119 transitions. [2022-07-13 22:04:22,971 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8172619047619047 [2022-07-13 22:04:22,971 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4119 transitions. [2022-07-13 22:04:22,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4119 transitions. [2022-07-13 22:04:22,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:22,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4119 transitions. [2022-07-13 22:04:22,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.625) internal successors, (4119), 24 states have internal predecessors, (4119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,977 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,977 INFO L186 Difference]: Start difference. First operand has 277 places, 230 transitions, 1012 flow. Second operand 24 states and 4119 transitions. [2022-07-13 22:04:22,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 319 transitions, 2236 flow [2022-07-13 22:04:22,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 319 transitions, 2050 flow, removed 86 selfloop flow, removed 12 redundant places. [2022-07-13 22:04:22,989 INFO L242 Difference]: Finished difference. Result has 295 places, 232 transitions, 1102 flow [2022-07-13 22:04:22,989 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1102, PETRI_PLACES=295, PETRI_TRANSITIONS=232} [2022-07-13 22:04:22,990 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 108 predicate places. [2022-07-13 22:04:22,990 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 232 transitions, 1102 flow [2022-07-13 22:04:22,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,990 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:22,990 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:22,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-13 22:04:22,991 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:22,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:22,991 INFO L85 PathProgramCache]: Analyzing trace with hash 307829718, now seen corresponding path program 6 times [2022-07-13 22:04:22,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:22,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94781795] [2022-07-13 22:04:22,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:22,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:23,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:23,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:23,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94781795] [2022-07-13 22:04:23,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94781795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:23,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:23,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:23,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44082140] [2022-07-13 22:04:23,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:23,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:23,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:23,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:23,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:23,058 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:23,059 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 232 transitions, 1102 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,059 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:23,059 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:23,059 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:23,349 INFO L129 PetriNetUnfolder]: 139/945 cut-off events. [2022-07-13 22:04:23,349 INFO L130 PetriNetUnfolder]: For 2926/2935 co-relation queries the response was YES. [2022-07-13 22:04:23,353 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2754 conditions, 945 events. 139/945 cut-off events. For 2926/2935 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6551 event pairs, 45 based on Foata normal form. 5/908 useless extension candidates. Maximal degree in co-relation 2683. Up to 177 conditions per place. [2022-07-13 22:04:23,354 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 70 selfloop transitions, 23 changer transitions 33/282 dead transitions. [2022-07-13 22:04:23,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 282 transitions, 1873 flow [2022-07-13 22:04:23,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:04:23,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-13 22:04:23,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3766 transitions. [2022-07-13 22:04:23,365 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8151515151515152 [2022-07-13 22:04:23,365 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3766 transitions. [2022-07-13 22:04:23,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3766 transitions. [2022-07-13 22:04:23,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:23,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3766 transitions. [2022-07-13 22:04:23,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.1818181818182) internal successors, (3766), 22 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,371 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,371 INFO L186 Difference]: Start difference. First operand has 295 places, 232 transitions, 1102 flow. Second operand 22 states and 3766 transitions. [2022-07-13 22:04:23,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 282 transitions, 1873 flow [2022-07-13 22:04:23,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 282 transitions, 1782 flow, removed 24 selfloop flow, removed 17 redundant places. [2022-07-13 22:04:23,381 INFO L242 Difference]: Finished difference. Result has 297 places, 236 transitions, 1196 flow [2022-07-13 22:04:23,382 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1196, PETRI_PLACES=297, PETRI_TRANSITIONS=236} [2022-07-13 22:04:23,382 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 110 predicate places. [2022-07-13 22:04:23,382 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 236 transitions, 1196 flow [2022-07-13 22:04:23,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,383 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:23,383 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:23,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-13 22:04:23,383 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:23,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:23,383 INFO L85 PathProgramCache]: Analyzing trace with hash 3506552, now seen corresponding path program 7 times [2022-07-13 22:04:23,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:23,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160115507] [2022-07-13 22:04:23,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:23,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:23,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:23,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:23,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160115507] [2022-07-13 22:04:23,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160115507] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:23,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:23,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:23,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311495022] [2022-07-13 22:04:23,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:23,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:23,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:23,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:23,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:23,456 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:23,457 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 236 transitions, 1196 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:23,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:23,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:23,757 INFO L129 PetriNetUnfolder]: 135/942 cut-off events. [2022-07-13 22:04:23,757 INFO L130 PetriNetUnfolder]: For 3558/3572 co-relation queries the response was YES. [2022-07-13 22:04:23,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2835 conditions, 942 events. 135/942 cut-off events. For 3558/3572 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6579 event pairs, 42 based on Foata normal form. 2/905 useless extension candidates. Maximal degree in co-relation 2764. Up to 169 conditions per place. [2022-07-13 22:04:23,766 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 84 selfloop transitions, 23 changer transitions 33/296 dead transitions. [2022-07-13 22:04:23,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 296 transitions, 2272 flow [2022-07-13 22:04:23,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 22:04:23,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-13 22:04:23,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3604 transitions. [2022-07-13 22:04:23,774 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8172335600907029 [2022-07-13 22:04:23,774 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3604 transitions. [2022-07-13 22:04:23,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3604 transitions. [2022-07-13 22:04:23,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:23,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3604 transitions. [2022-07-13 22:04:23,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.61904761904762) internal successors, (3604), 21 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,779 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,779 INFO L186 Difference]: Start difference. First operand has 297 places, 236 transitions, 1196 flow. Second operand 21 states and 3604 transitions. [2022-07-13 22:04:23,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 296 transitions, 2272 flow [2022-07-13 22:04:23,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 296 transitions, 2082 flow, removed 79 selfloop flow, removed 14 redundant places. [2022-07-13 22:04:23,793 INFO L242 Difference]: Finished difference. Result has 305 places, 246 transitions, 1401 flow [2022-07-13 22:04:23,793 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1401, PETRI_PLACES=305, PETRI_TRANSITIONS=246} [2022-07-13 22:04:23,793 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 118 predicate places. [2022-07-13 22:04:23,794 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 246 transitions, 1401 flow [2022-07-13 22:04:23,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,794 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:23,794 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:23,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-13 22:04:23,795 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:23,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:23,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1512253328, now seen corresponding path program 8 times [2022-07-13 22:04:23,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:23,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297195714] [2022-07-13 22:04:23,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:23,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:23,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:23,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:23,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297195714] [2022-07-13 22:04:23,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297195714] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:23,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:23,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:23,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905964520] [2022-07-13 22:04:23,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:23,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:23,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:23,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:23,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:23,873 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:23,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 246 transitions, 1401 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,874 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:23,874 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:23,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:24,089 INFO L129 PetriNetUnfolder]: 117/814 cut-off events. [2022-07-13 22:04:24,090 INFO L130 PetriNetUnfolder]: For 3007/3035 co-relation queries the response was YES. [2022-07-13 22:04:24,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2452 conditions, 814 events. 117/814 cut-off events. For 3007/3035 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5282 event pairs, 39 based on Foata normal form. 11/784 useless extension candidates. Maximal degree in co-relation 2377. Up to 169 conditions per place. [2022-07-13 22:04:24,097 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 66 selfloop transitions, 15 changer transitions 30/267 dead transitions. [2022-07-13 22:04:24,097 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 267 transitions, 1817 flow [2022-07-13 22:04:24,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:04:24,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:04:24,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2744 transitions. [2022-07-13 22:04:24,099 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-07-13 22:04:24,099 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2744 transitions. [2022-07-13 22:04:24,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2744 transitions. [2022-07-13 22:04:24,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:24,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2744 transitions. [2022-07-13 22:04:24,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.5) internal successors, (2744), 16 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,103 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,103 INFO L186 Difference]: Start difference. First operand has 305 places, 246 transitions, 1401 flow. Second operand 16 states and 2744 transitions. [2022-07-13 22:04:24,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 267 transitions, 1817 flow [2022-07-13 22:04:24,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 267 transitions, 1710 flow, removed 50 selfloop flow, removed 11 redundant places. [2022-07-13 22:04:24,116 INFO L242 Difference]: Finished difference. Result has 301 places, 230 transitions, 1133 flow [2022-07-13 22:04:24,117 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1133, PETRI_PLACES=301, PETRI_TRANSITIONS=230} [2022-07-13 22:04:24,117 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 114 predicate places. [2022-07-13 22:04:24,117 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 230 transitions, 1133 flow [2022-07-13 22:04:24,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,118 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:24,118 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:24,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-13 22:04:24,118 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:24,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:24,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1924249166, now seen corresponding path program 9 times [2022-07-13 22:04:24,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:24,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697347094] [2022-07-13 22:04:24,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:24,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:24,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:24,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:24,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697347094] [2022-07-13 22:04:24,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697347094] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:24,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:24,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:24,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497636104] [2022-07-13 22:04:24,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:24,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:24,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:24,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:24,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:24,189 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:24,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 230 transitions, 1133 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:24,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:24,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:24,422 INFO L129 PetriNetUnfolder]: 115/854 cut-off events. [2022-07-13 22:04:24,422 INFO L130 PetriNetUnfolder]: For 2534/2542 co-relation queries the response was YES. [2022-07-13 22:04:24,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 854 events. 115/854 cut-off events. For 2534/2542 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5731 event pairs, 42 based on Foata normal form. 1/813 useless extension candidates. Maximal degree in co-relation 2383. Up to 170 conditions per place. [2022-07-13 22:04:24,429 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 72 selfloop transitions, 19 changer transitions 33/280 dead transitions. [2022-07-13 22:04:24,429 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 280 transitions, 2012 flow [2022-07-13 22:04:24,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:04:24,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-13 22:04:24,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3430 transitions. [2022-07-13 22:04:24,441 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-07-13 22:04:24,441 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3430 transitions. [2022-07-13 22:04:24,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3430 transitions. [2022-07-13 22:04:24,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:24,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3430 transitions. [2022-07-13 22:04:24,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.5) internal successors, (3430), 20 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,446 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,446 INFO L186 Difference]: Start difference. First operand has 301 places, 230 transitions, 1133 flow. Second operand 20 states and 3430 transitions. [2022-07-13 22:04:24,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 280 transitions, 2012 flow [2022-07-13 22:04:24,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 280 transitions, 1863 flow, removed 25 selfloop flow, removed 13 redundant places. [2022-07-13 22:04:24,458 INFO L242 Difference]: Finished difference. Result has 301 places, 237 transitions, 1250 flow [2022-07-13 22:04:24,458 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1250, PETRI_PLACES=301, PETRI_TRANSITIONS=237} [2022-07-13 22:04:24,459 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 114 predicate places. [2022-07-13 22:04:24,459 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 237 transitions, 1250 flow [2022-07-13 22:04:24,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,459 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:24,459 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:24,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-13 22:04:24,460 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:24,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:24,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1309424042, now seen corresponding path program 10 times [2022-07-13 22:04:24,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:24,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881550213] [2022-07-13 22:04:24,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:24,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:24,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:24,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:24,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881550213] [2022-07-13 22:04:24,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881550213] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:24,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:24,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:24,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809509578] [2022-07-13 22:04:24,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:24,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:24,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:24,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:24,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:24,537 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:24,538 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 237 transitions, 1250 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:24,538 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:24,538 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:24,790 INFO L129 PetriNetUnfolder]: 117/851 cut-off events. [2022-07-13 22:04:24,790 INFO L130 PetriNetUnfolder]: For 2945/2953 co-relation queries the response was YES. [2022-07-13 22:04:24,796 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2545 conditions, 851 events. 117/851 cut-off events. For 2945/2953 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5654 event pairs, 42 based on Foata normal form. 1/810 useless extension candidates. Maximal degree in co-relation 2469. Up to 168 conditions per place. [2022-07-13 22:04:24,798 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 71 selfloop transitions, 24 changer transitions 27/278 dead transitions. [2022-07-13 22:04:24,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 278 transitions, 2046 flow [2022-07-13 22:04:24,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:04:24,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:04:24,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2922 transitions. [2022-07-13 22:04:24,800 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8184873949579832 [2022-07-13 22:04:24,800 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2922 transitions. [2022-07-13 22:04:24,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2922 transitions. [2022-07-13 22:04:24,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:24,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2922 transitions. [2022-07-13 22:04:24,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.88235294117646) internal successors, (2922), 17 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,804 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,804 INFO L186 Difference]: Start difference. First operand has 301 places, 237 transitions, 1250 flow. Second operand 17 states and 2922 transitions. [2022-07-13 22:04:24,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 278 transitions, 2046 flow [2022-07-13 22:04:24,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 278 transitions, 1889 flow, removed 56 selfloop flow, removed 13 redundant places. [2022-07-13 22:04:24,816 INFO L242 Difference]: Finished difference. Result has 302 places, 245 transitions, 1392 flow [2022-07-13 22:04:24,817 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1392, PETRI_PLACES=302, PETRI_TRANSITIONS=245} [2022-07-13 22:04:24,817 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 115 predicate places. [2022-07-13 22:04:24,817 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 245 transitions, 1392 flow [2022-07-13 22:04:24,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,818 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:24,818 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:24,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-13 22:04:24,818 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:24,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:24,818 INFO L85 PathProgramCache]: Analyzing trace with hash -326465042, now seen corresponding path program 11 times [2022-07-13 22:04:24,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:24,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222632633] [2022-07-13 22:04:24,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:24,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:24,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:24,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:24,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222632633] [2022-07-13 22:04:24,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222632633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:24,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:24,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:24,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380949419] [2022-07-13 22:04:24,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:24,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:24,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:24,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:24,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:24,891 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:24,892 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 245 transitions, 1392 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:24,892 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:24,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:25,155 INFO L129 PetriNetUnfolder]: 120/880 cut-off events. [2022-07-13 22:04:25,155 INFO L130 PetriNetUnfolder]: For 2857/2875 co-relation queries the response was YES. [2022-07-13 22:04:25,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2598 conditions, 880 events. 120/880 cut-off events. For 2857/2875 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5952 event pairs, 42 based on Foata normal form. 3/841 useless extension candidates. Maximal degree in co-relation 2523. Up to 172 conditions per place. [2022-07-13 22:04:25,160 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 74 selfloop transitions, 27 changer transitions 29/286 dead transitions. [2022-07-13 22:04:25,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 286 transitions, 2144 flow [2022-07-13 22:04:25,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:04:25,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:04:25,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2924 transitions. [2022-07-13 22:04:25,174 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.819047619047619 [2022-07-13 22:04:25,174 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2924 transitions. [2022-07-13 22:04:25,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2924 transitions. [2022-07-13 22:04:25,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:25,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2924 transitions. [2022-07-13 22:04:25,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 172.0) internal successors, (2924), 17 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,178 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,178 INFO L186 Difference]: Start difference. First operand has 302 places, 245 transitions, 1392 flow. Second operand 17 states and 2924 transitions. [2022-07-13 22:04:25,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 286 transitions, 2144 flow [2022-07-13 22:04:25,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 286 transitions, 2055 flow, removed 26 selfloop flow, removed 9 redundant places. [2022-07-13 22:04:25,191 INFO L242 Difference]: Finished difference. Result has 311 places, 252 transitions, 1533 flow [2022-07-13 22:04:25,191 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1533, PETRI_PLACES=311, PETRI_TRANSITIONS=252} [2022-07-13 22:04:25,191 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 124 predicate places. [2022-07-13 22:04:25,191 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 252 transitions, 1533 flow [2022-07-13 22:04:25,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,192 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:25,192 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:25,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-13 22:04:25,192 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:25,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:25,192 INFO L85 PathProgramCache]: Analyzing trace with hash -315781316, now seen corresponding path program 12 times [2022-07-13 22:04:25,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:25,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240553318] [2022-07-13 22:04:25,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:25,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:25,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:25,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:25,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240553318] [2022-07-13 22:04:25,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240553318] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:25,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:25,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:25,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221984129] [2022-07-13 22:04:25,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:25,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:25,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:25,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:25,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:25,277 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:25,278 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 252 transitions, 1533 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,278 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:25,278 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:25,278 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:25,532 INFO L129 PetriNetUnfolder]: 108/845 cut-off events. [2022-07-13 22:04:25,532 INFO L130 PetriNetUnfolder]: For 2688/2706 co-relation queries the response was YES. [2022-07-13 22:04:25,537 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2431 conditions, 845 events. 108/845 cut-off events. For 2688/2706 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5644 event pairs, 41 based on Foata normal form. 3/806 useless extension candidates. Maximal degree in co-relation 2353. Up to 165 conditions per place. [2022-07-13 22:04:25,538 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 70 selfloop transitions, 16 changer transitions 34/276 dead transitions. [2022-07-13 22:04:25,538 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 276 transitions, 1995 flow [2022-07-13 22:04:25,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:04:25,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:04:25,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3087 transitions. [2022-07-13 22:04:25,540 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-07-13 22:04:25,540 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3087 transitions. [2022-07-13 22:04:25,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3087 transitions. [2022-07-13 22:04:25,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:25,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3087 transitions. [2022-07-13 22:04:25,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.5) internal successors, (3087), 18 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,544 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,544 INFO L186 Difference]: Start difference. First operand has 311 places, 252 transitions, 1533 flow. Second operand 18 states and 3087 transitions. [2022-07-13 22:04:25,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 276 transitions, 1995 flow [2022-07-13 22:04:25,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 276 transitions, 1899 flow, removed 25 selfloop flow, removed 9 redundant places. [2022-07-13 22:04:25,557 INFO L242 Difference]: Finished difference. Result has 316 places, 238 transitions, 1273 flow [2022-07-13 22:04:25,557 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1454, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1273, PETRI_PLACES=316, PETRI_TRANSITIONS=238} [2022-07-13 22:04:25,557 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 129 predicate places. [2022-07-13 22:04:25,557 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 238 transitions, 1273 flow [2022-07-13 22:04:25,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,558 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:25,558 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:25,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-13 22:04:25,558 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:25,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:25,558 INFO L85 PathProgramCache]: Analyzing trace with hash -193117120, now seen corresponding path program 13 times [2022-07-13 22:04:25,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:25,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484900738] [2022-07-13 22:04:25,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:25,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:25,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:25,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484900738] [2022-07-13 22:04:25,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484900738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:25,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:25,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:25,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340829869] [2022-07-13 22:04:25,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:25,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:25,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:25,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:25,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:25,648 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:25,648 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 238 transitions, 1273 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,648 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:25,649 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:25,649 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:25,862 INFO L129 PetriNetUnfolder]: 94/751 cut-off events. [2022-07-13 22:04:25,863 INFO L130 PetriNetUnfolder]: For 2055/2063 co-relation queries the response was YES. [2022-07-13 22:04:25,868 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2037 conditions, 751 events. 94/751 cut-off events. For 2055/2063 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4701 event pairs, 38 based on Foata normal form. 1/711 useless extension candidates. Maximal degree in co-relation 1960. Up to 152 conditions per place. [2022-07-13 22:04:25,869 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 60 selfloop transitions, 5 changer transitions 33/254 dead transitions. [2022-07-13 22:04:25,869 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 254 transitions, 1590 flow [2022-07-13 22:04:25,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:04:25,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:04:25,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3076 transitions. [2022-07-13 22:04:25,875 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8137566137566138 [2022-07-13 22:04:25,875 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3076 transitions. [2022-07-13 22:04:25,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3076 transitions. [2022-07-13 22:04:25,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:25,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3076 transitions. [2022-07-13 22:04:25,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.88888888888889) internal successors, (3076), 18 states have internal predecessors, (3076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,879 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,879 INFO L186 Difference]: Start difference. First operand has 316 places, 238 transitions, 1273 flow. Second operand 18 states and 3076 transitions. [2022-07-13 22:04:25,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 254 transitions, 1590 flow [2022-07-13 22:04:25,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 254 transitions, 1477 flow, removed 22 selfloop flow, removed 19 redundant places. [2022-07-13 22:04:25,890 INFO L242 Difference]: Finished difference. Result has 302 places, 218 transitions, 925 flow [2022-07-13 22:04:25,891 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=925, PETRI_PLACES=302, PETRI_TRANSITIONS=218} [2022-07-13 22:04:25,891 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 115 predicate places. [2022-07-13 22:04:25,891 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 218 transitions, 925 flow [2022-07-13 22:04:25,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,892 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:25,892 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:25,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-13 22:04:25,892 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:25,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:25,892 INFO L85 PathProgramCache]: Analyzing trace with hash -973000416, now seen corresponding path program 14 times [2022-07-13 22:04:25,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:25,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683087020] [2022-07-13 22:04:25,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:25,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:25,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:25,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:25,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683087020] [2022-07-13 22:04:25,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683087020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:25,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:25,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:25,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985609270] [2022-07-13 22:04:25,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:25,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:25,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:25,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:25,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:25,965 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:25,965 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 218 transitions, 925 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:25,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:25,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:26,248 INFO L129 PetriNetUnfolder]: 96/780 cut-off events. [2022-07-13 22:04:26,248 INFO L130 PetriNetUnfolder]: For 1560/1565 co-relation queries the response was YES. [2022-07-13 22:04:26,252 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2020 conditions, 780 events. 96/780 cut-off events. For 1560/1565 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5022 event pairs, 36 based on Foata normal form. 1/741 useless extension candidates. Maximal degree in co-relation 1950. Up to 129 conditions per place. [2022-07-13 22:04:26,253 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 54 selfloop transitions, 23 changer transitions 34/267 dead transitions. [2022-07-13 22:04:26,253 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 267 transitions, 1668 flow [2022-07-13 22:04:26,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:04:26,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-13 22:04:26,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3764 transitions. [2022-07-13 22:04:26,255 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8147186147186147 [2022-07-13 22:04:26,255 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3764 transitions. [2022-07-13 22:04:26,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3764 transitions. [2022-07-13 22:04:26,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:26,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3764 transitions. [2022-07-13 22:04:26,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.0909090909091) internal successors, (3764), 22 states have internal predecessors, (3764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,260 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,260 INFO L186 Difference]: Start difference. First operand has 302 places, 218 transitions, 925 flow. Second operand 22 states and 3764 transitions. [2022-07-13 22:04:26,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 267 transitions, 1668 flow [2022-07-13 22:04:26,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 267 transitions, 1523 flow, removed 28 selfloop flow, removed 20 redundant places. [2022-07-13 22:04:26,268 INFO L242 Difference]: Finished difference. Result has 289 places, 223 transitions, 1001 flow [2022-07-13 22:04:26,268 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1001, PETRI_PLACES=289, PETRI_TRANSITIONS=223} [2022-07-13 22:04:26,270 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 102 predicate places. [2022-07-13 22:04:26,270 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 223 transitions, 1001 flow [2022-07-13 22:04:26,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,270 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:26,270 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:26,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-13 22:04:26,271 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:26,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:26,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1643620878, now seen corresponding path program 15 times [2022-07-13 22:04:26,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:26,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856170427] [2022-07-13 22:04:26,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:26,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:26,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:26,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:26,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856170427] [2022-07-13 22:04:26,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856170427] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:26,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:26,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:26,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354220236] [2022-07-13 22:04:26,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:26,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:26,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:26,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:26,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:26,356 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:26,357 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 223 transitions, 1001 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,357 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:26,357 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:26,357 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:26,574 INFO L129 PetriNetUnfolder]: 97/815 cut-off events. [2022-07-13 22:04:26,574 INFO L130 PetriNetUnfolder]: For 1909/1914 co-relation queries the response was YES. [2022-07-13 22:04:26,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2134 conditions, 815 events. 97/815 cut-off events. For 1909/1914 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5384 event pairs, 34 based on Foata normal form. 3/782 useless extension candidates. Maximal degree in co-relation 2066. Up to 134 conditions per place. [2022-07-13 22:04:26,580 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 55 selfloop transitions, 27 changer transitions 27/265 dead transitions. [2022-07-13 22:04:26,580 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 265 transitions, 1687 flow [2022-07-13 22:04:26,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:04:26,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:04:26,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2919 transitions. [2022-07-13 22:04:26,582 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8176470588235294 [2022-07-13 22:04:26,582 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2919 transitions. [2022-07-13 22:04:26,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2919 transitions. [2022-07-13 22:04:26,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:26,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2919 transitions. [2022-07-13 22:04:26,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.7058823529412) internal successors, (2919), 17 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,586 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,586 INFO L186 Difference]: Start difference. First operand has 289 places, 223 transitions, 1001 flow. Second operand 17 states and 2919 transitions. [2022-07-13 22:04:26,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 265 transitions, 1687 flow [2022-07-13 22:04:26,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 265 transitions, 1601 flow, removed 30 selfloop flow, removed 13 redundant places. [2022-07-13 22:04:26,595 INFO L242 Difference]: Finished difference. Result has 288 places, 231 transitions, 1167 flow [2022-07-13 22:04:26,595 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1167, PETRI_PLACES=288, PETRI_TRANSITIONS=231} [2022-07-13 22:04:26,595 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 101 predicate places. [2022-07-13 22:04:26,595 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 231 transitions, 1167 flow [2022-07-13 22:04:26,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,596 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:26,596 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:26,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-13 22:04:26,596 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:26,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:26,596 INFO L85 PathProgramCache]: Analyzing trace with hash 29335104, now seen corresponding path program 16 times [2022-07-13 22:04:26,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:26,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206205399] [2022-07-13 22:04:26,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:26,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:26,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:26,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:26,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206205399] [2022-07-13 22:04:26,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206205399] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:26,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:26,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:26,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472753896] [2022-07-13 22:04:26,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:26,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:26,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:26,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:26,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:26,692 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:26,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 231 transitions, 1167 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:26,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:26,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:26,919 INFO L129 PetriNetUnfolder]: 87/761 cut-off events. [2022-07-13 22:04:26,919 INFO L130 PetriNetUnfolder]: For 1622/1627 co-relation queries the response was YES. [2022-07-13 22:04:26,924 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1965 conditions, 761 events. 87/761 cut-off events. For 1622/1627 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4808 event pairs, 36 based on Foata normal form. 1/725 useless extension candidates. Maximal degree in co-relation 1898. Up to 130 conditions per place. [2022-07-13 22:04:26,925 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 52 selfloop transitions, 14 changer transitions 33/255 dead transitions. [2022-07-13 22:04:26,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 255 transitions, 1573 flow [2022-07-13 22:04:26,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:04:26,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:04:26,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3082 transitions. [2022-07-13 22:04:26,927 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8153439153439154 [2022-07-13 22:04:26,928 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3082 transitions. [2022-07-13 22:04:26,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3082 transitions. [2022-07-13 22:04:26,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:26,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3082 transitions. [2022-07-13 22:04:26,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.22222222222223) internal successors, (3082), 18 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,932 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,932 INFO L186 Difference]: Start difference. First operand has 288 places, 231 transitions, 1167 flow. Second operand 18 states and 3082 transitions. [2022-07-13 22:04:26,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 255 transitions, 1573 flow [2022-07-13 22:04:26,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 255 transitions, 1475 flow, removed 27 selfloop flow, removed 9 redundant places. [2022-07-13 22:04:26,942 INFO L242 Difference]: Finished difference. Result has 295 places, 216 transitions, 919 flow [2022-07-13 22:04:26,942 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=919, PETRI_PLACES=295, PETRI_TRANSITIONS=216} [2022-07-13 22:04:26,942 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 108 predicate places. [2022-07-13 22:04:26,943 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 216 transitions, 919 flow [2022-07-13 22:04:26,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,943 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:26,943 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:26,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-13 22:04:26,943 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:26,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:26,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1411194016, now seen corresponding path program 17 times [2022-07-13 22:04:26,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:26,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160945543] [2022-07-13 22:04:26,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:26,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:27,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:27,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:27,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160945543] [2022-07-13 22:04:27,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160945543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:27,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:27,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:27,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133582708] [2022-07-13 22:04:27,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:27,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:27,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:27,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:27,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:27,033 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:27,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 216 transitions, 919 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:27,034 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:27,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:27,299 INFO L129 PetriNetUnfolder]: 87/740 cut-off events. [2022-07-13 22:04:27,299 INFO L130 PetriNetUnfolder]: For 1726/1729 co-relation queries the response was YES. [2022-07-13 22:04:27,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1911 conditions, 740 events. 87/740 cut-off events. For 1726/1729 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4641 event pairs, 35 based on Foata normal form. 1/703 useless extension candidates. Maximal degree in co-relation 1843. Up to 121 conditions per place. [2022-07-13 22:04:27,306 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 48 selfloop transitions, 20 changer transitions 34/258 dead transitions. [2022-07-13 22:04:27,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 258 transitions, 1639 flow [2022-07-13 22:04:27,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 22:04:27,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-13 22:04:27,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3593 transitions. [2022-07-13 22:04:27,310 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8147392290249433 [2022-07-13 22:04:27,310 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3593 transitions. [2022-07-13 22:04:27,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3593 transitions. [2022-07-13 22:04:27,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:27,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3593 transitions. [2022-07-13 22:04:27,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.0952380952381) internal successors, (3593), 21 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,317 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,317 INFO L186 Difference]: Start difference. First operand has 295 places, 216 transitions, 919 flow. Second operand 21 states and 3593 transitions. [2022-07-13 22:04:27,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 258 transitions, 1639 flow [2022-07-13 22:04:27,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 258 transitions, 1468 flow, removed 39 selfloop flow, removed 18 redundant places. [2022-07-13 22:04:27,325 INFO L242 Difference]: Finished difference. Result has 287 places, 219 transitions, 979 flow [2022-07-13 22:04:27,325 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=979, PETRI_PLACES=287, PETRI_TRANSITIONS=219} [2022-07-13 22:04:27,326 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 100 predicate places. [2022-07-13 22:04:27,326 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 219 transitions, 979 flow [2022-07-13 22:04:27,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,326 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:27,326 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:27,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-13 22:04:27,326 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:27,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:27,326 INFO L85 PathProgramCache]: Analyzing trace with hash -256073726, now seen corresponding path program 18 times [2022-07-13 22:04:27,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:27,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694626581] [2022-07-13 22:04:27,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:27,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:27,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:27,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694626581] [2022-07-13 22:04:27,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694626581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:27,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:27,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:27,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577218242] [2022-07-13 22:04:27,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:27,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:27,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:27,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:27,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:27,396 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:27,397 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 219 transitions, 979 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,397 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:27,397 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:27,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:27,622 INFO L129 PetriNetUnfolder]: 81/721 cut-off events. [2022-07-13 22:04:27,622 INFO L130 PetriNetUnfolder]: For 1441/1444 co-relation queries the response was YES. [2022-07-13 22:04:27,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1795 conditions, 721 events. 81/721 cut-off events. For 1441/1444 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4471 event pairs, 34 based on Foata normal form. 1/685 useless extension candidates. Maximal degree in co-relation 1727. Up to 126 conditions per place. [2022-07-13 22:04:27,628 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 45 selfloop transitions, 12 changer transitions 32/245 dead transitions. [2022-07-13 22:04:27,628 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 245 transitions, 1382 flow [2022-07-13 22:04:27,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:04:27,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:04:27,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3083 transitions. [2022-07-13 22:04:27,630 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8156084656084656 [2022-07-13 22:04:27,630 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3083 transitions. [2022-07-13 22:04:27,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3083 transitions. [2022-07-13 22:04:27,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:27,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3083 transitions. [2022-07-13 22:04:27,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.27777777777777) internal successors, (3083), 18 states have internal predecessors, (3083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,634 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,634 INFO L186 Difference]: Start difference. First operand has 287 places, 219 transitions, 979 flow. Second operand 18 states and 3083 transitions. [2022-07-13 22:04:27,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 245 transitions, 1382 flow [2022-07-13 22:04:27,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 245 transitions, 1289 flow, removed 32 selfloop flow, removed 14 redundant places. [2022-07-13 22:04:27,642 INFO L242 Difference]: Finished difference. Result has 285 places, 211 transitions, 846 flow [2022-07-13 22:04:27,643 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=846, PETRI_PLACES=285, PETRI_TRANSITIONS=211} [2022-07-13 22:04:27,643 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 98 predicate places. [2022-07-13 22:04:27,643 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 211 transitions, 846 flow [2022-07-13 22:04:27,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,643 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:27,643 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:27,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-13 22:04:27,644 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:27,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:27,644 INFO L85 PathProgramCache]: Analyzing trace with hash 461687660, now seen corresponding path program 19 times [2022-07-13 22:04:27,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:27,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191397898] [2022-07-13 22:04:27,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:27,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:27,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:27,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:27,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191397898] [2022-07-13 22:04:27,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191397898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:27,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:27,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:27,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330688688] [2022-07-13 22:04:27,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:27,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:27,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:27,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:27,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:27,727 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:27,728 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 211 transitions, 846 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,728 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:27,728 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:27,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:27,962 INFO L129 PetriNetUnfolder]: 76/703 cut-off events. [2022-07-13 22:04:27,962 INFO L130 PetriNetUnfolder]: For 1204/1207 co-relation queries the response was YES. [2022-07-13 22:04:27,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1688 conditions, 703 events. 76/703 cut-off events. For 1204/1207 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4322 event pairs, 34 based on Foata normal form. 1/666 useless extension candidates. Maximal degree in co-relation 1623. Up to 126 conditions per place. [2022-07-13 22:04:27,968 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 40 selfloop transitions, 17 changer transitions 32/245 dead transitions. [2022-07-13 22:04:27,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 245 transitions, 1372 flow [2022-07-13 22:04:27,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:04:27,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:04:27,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2917 transitions. [2022-07-13 22:04:27,970 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8170868347338935 [2022-07-13 22:04:27,970 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2917 transitions. [2022-07-13 22:04:27,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2917 transitions. [2022-07-13 22:04:27,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:27,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2917 transitions. [2022-07-13 22:04:27,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.58823529411765) internal successors, (2917), 17 states have internal predecessors, (2917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,974 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,974 INFO L186 Difference]: Start difference. First operand has 285 places, 211 transitions, 846 flow. Second operand 17 states and 2917 transitions. [2022-07-13 22:04:27,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 245 transitions, 1372 flow [2022-07-13 22:04:27,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 245 transitions, 1275 flow, removed 23 selfloop flow, removed 15 redundant places. [2022-07-13 22:04:27,982 INFO L242 Difference]: Finished difference. Result has 277 places, 211 transitions, 858 flow [2022-07-13 22:04:27,982 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=858, PETRI_PLACES=277, PETRI_TRANSITIONS=211} [2022-07-13 22:04:27,982 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 90 predicate places. [2022-07-13 22:04:27,983 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 211 transitions, 858 flow [2022-07-13 22:04:27,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,987 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:27,987 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:27,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-13 22:04:27,987 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:27,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:27,987 INFO L85 PathProgramCache]: Analyzing trace with hash 206953098, now seen corresponding path program 20 times [2022-07-13 22:04:27,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:27,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978477226] [2022-07-13 22:04:27,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:27,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:28,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:28,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:28,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978477226] [2022-07-13 22:04:28,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978477226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:28,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:28,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:28,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403409848] [2022-07-13 22:04:28,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:28,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:28,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:28,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:28,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:28,084 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-13 22:04:28,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 211 transitions, 858 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:28,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-13 22:04:28,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:28,264 INFO L129 PetriNetUnfolder]: 63/592 cut-off events. [2022-07-13 22:04:28,264 INFO L130 PetriNetUnfolder]: For 765/768 co-relation queries the response was YES. [2022-07-13 22:04:28,267 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1321 conditions, 592 events. 63/592 cut-off events. For 765/768 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3393 event pairs, 32 based on Foata normal form. 1/557 useless extension candidates. Maximal degree in co-relation 1258. Up to 103 conditions per place. [2022-07-13 22:04:28,268 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 29 selfloop transitions, 0 changer transitions 43/222 dead transitions. [2022-07-13 22:04:28,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 222 transitions, 1029 flow [2022-07-13 22:04:28,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:04:28,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:04:28,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3071 transitions. [2022-07-13 22:04:28,270 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8124338624338624 [2022-07-13 22:04:28,270 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3071 transitions. [2022-07-13 22:04:28,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3071 transitions. [2022-07-13 22:04:28,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:28,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3071 transitions. [2022-07-13 22:04:28,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.61111111111111) internal successors, (3071), 18 states have internal predecessors, (3071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,275 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,275 INFO L186 Difference]: Start difference. First operand has 277 places, 211 transitions, 858 flow. Second operand 18 states and 3071 transitions. [2022-07-13 22:04:28,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 222 transitions, 1029 flow [2022-07-13 22:04:28,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 222 transitions, 943 flow, removed 26 selfloop flow, removed 11 redundant places. [2022-07-13 22:04:28,281 INFO L242 Difference]: Finished difference. Result has 278 places, 179 transitions, 456 flow [2022-07-13 22:04:28,281 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=456, PETRI_PLACES=278, PETRI_TRANSITIONS=179} [2022-07-13 22:04:28,281 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 91 predicate places. [2022-07-13 22:04:28,281 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 179 transitions, 456 flow [2022-07-13 22:04:28,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,282 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:28,282 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:28,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-13 22:04:28,282 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:28,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:28,282 INFO L85 PathProgramCache]: Analyzing trace with hash 500637102, now seen corresponding path program 1 times [2022-07-13 22:04:28,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:28,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939907498] [2022-07-13 22:04:28,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:28,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:28,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:28,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:28,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939907498] [2022-07-13 22:04:28,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939907498] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:28,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:28,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:28,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761849754] [2022-07-13 22:04:28,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:28,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:28,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:28,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:28,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:28,298 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-07-13 22:04:28,298 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 179 transitions, 456 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,298 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:28,298 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-07-13 22:04:28,298 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:28,373 INFO L129 PetriNetUnfolder]: 59/781 cut-off events. [2022-07-13 22:04:28,373 INFO L130 PetriNetUnfolder]: For 391/400 co-relation queries the response was YES. [2022-07-13 22:04:28,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 781 events. 59/781 cut-off events. For 391/400 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5195 event pairs, 23 based on Foata normal form. 0/724 useless extension candidates. Maximal degree in co-relation 1220. Up to 33 conditions per place. [2022-07-13 22:04:28,378 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 13 selfloop transitions, 5 changer transitions 0/185 dead transitions. [2022-07-13 22:04:28,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 185 transitions, 507 flow [2022-07-13 22:04:28,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:28,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:28,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-07-13 22:04:28,379 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-07-13 22:04:28,379 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-07-13 22:04:28,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-07-13 22:04:28,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:28,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-07-13 22:04:28,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,380 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,380 INFO L186 Difference]: Start difference. First operand has 278 places, 179 transitions, 456 flow. Second operand 3 states and 591 transitions. [2022-07-13 22:04:28,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 185 transitions, 507 flow [2022-07-13 22:04:28,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 185 transitions, 481 flow, removed 13 selfloop flow, removed 10 redundant places. [2022-07-13 22:04:28,383 INFO L242 Difference]: Finished difference. Result has 224 places, 182 transitions, 468 flow [2022-07-13 22:04:28,384 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=468, PETRI_PLACES=224, PETRI_TRANSITIONS=182} [2022-07-13 22:04:28,384 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 37 predicate places. [2022-07-13 22:04:28,384 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 182 transitions, 468 flow [2022-07-13 22:04:28,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,384 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:28,384 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:28,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-13 22:04:28,384 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:28,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:28,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1964400122, now seen corresponding path program 1 times [2022-07-13 22:04:28,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:28,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38209308] [2022-07-13 22:04:28,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:28,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:28,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:28,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38209308] [2022-07-13 22:04:28,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38209308] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:28,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:28,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:04:28,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130702714] [2022-07-13 22:04:28,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:28,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:04:28,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:28,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:04:28,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:04:28,482 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:04:28,482 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 182 transitions, 468 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,482 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:28,483 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:04:28,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:29,380 INFO L129 PetriNetUnfolder]: 459/1741 cut-off events. [2022-07-13 22:04:29,380 INFO L130 PetriNetUnfolder]: For 1002/1002 co-relation queries the response was YES. [2022-07-13 22:04:29,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3615 conditions, 1741 events. 459/1741 cut-off events. For 1002/1002 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 12849 event pairs, 191 based on Foata normal form. 1/1650 useless extension candidates. Maximal degree in co-relation 3565. Up to 625 conditions per place. [2022-07-13 22:04:29,390 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 158 selfloop transitions, 10 changer transitions 98/406 dead transitions. [2022-07-13 22:04:29,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 406 transitions, 1768 flow [2022-07-13 22:04:29,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-13 22:04:29,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-07-13 22:04:29,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 9254 transitions. [2022-07-13 22:04:29,395 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7597701149425288 [2022-07-13 22:04:29,395 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 9254 transitions. [2022-07-13 22:04:29,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 9254 transitions. [2022-07-13 22:04:29,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:29,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 9254 transitions. [2022-07-13 22:04:29,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 159.55172413793105) internal successors, (9254), 58 states have internal predecessors, (9254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,407 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,407 INFO L186 Difference]: Start difference. First operand has 224 places, 182 transitions, 468 flow. Second operand 58 states and 9254 transitions. [2022-07-13 22:04:29,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 406 transitions, 1768 flow [2022-07-13 22:04:29,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 406 transitions, 1758 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:29,412 INFO L242 Difference]: Finished difference. Result has 335 places, 191 transitions, 716 flow [2022-07-13 22:04:29,413 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=716, PETRI_PLACES=335, PETRI_TRANSITIONS=191} [2022-07-13 22:04:29,413 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 148 predicate places. [2022-07-13 22:04:29,413 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 191 transitions, 716 flow [2022-07-13 22:04:29,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,413 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:29,413 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:29,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-13 22:04:29,414 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:29,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:29,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1966886732, now seen corresponding path program 2 times [2022-07-13 22:04:29,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:29,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915268882] [2022-07-13 22:04:29,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:29,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:29,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:29,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915268882] [2022-07-13 22:04:29,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915268882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:29,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:29,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:29,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859341193] [2022-07-13 22:04:29,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:29,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:29,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:29,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:29,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:29,437 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-07-13 22:04:29,437 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 191 transitions, 716 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,437 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:29,437 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-07-13 22:04:29,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:29,540 INFO L129 PetriNetUnfolder]: 114/979 cut-off events. [2022-07-13 22:04:29,540 INFO L130 PetriNetUnfolder]: For 8058/8089 co-relation queries the response was YES. [2022-07-13 22:04:29,551 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3444 conditions, 979 events. 114/979 cut-off events. For 8058/8089 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6074 event pairs, 89 based on Foata normal form. 9/932 useless extension candidates. Maximal degree in co-relation 3338. Up to 56 conditions per place. [2022-07-13 22:04:29,553 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 18 selfloop transitions, 3 changer transitions 0/197 dead transitions. [2022-07-13 22:04:29,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 197 transitions, 779 flow [2022-07-13 22:04:29,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:29,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:29,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-07-13 22:04:29,554 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-07-13 22:04:29,554 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-07-13 22:04:29,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-07-13 22:04:29,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:29,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-07-13 22:04:29,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,556 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,556 INFO L186 Difference]: Start difference. First operand has 335 places, 191 transitions, 716 flow. Second operand 3 states and 591 transitions. [2022-07-13 22:04:29,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 197 transitions, 779 flow [2022-07-13 22:04:29,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 197 transitions, 732 flow, removed 23 selfloop flow, removed 20 redundant places. [2022-07-13 22:04:29,571 INFO L242 Difference]: Finished difference. Result has 272 places, 194 transitions, 705 flow [2022-07-13 22:04:29,571 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=705, PETRI_PLACES=272, PETRI_TRANSITIONS=194} [2022-07-13 22:04:29,571 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 85 predicate places. [2022-07-13 22:04:29,572 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 194 transitions, 705 flow [2022-07-13 22:04:29,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,572 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:29,572 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:29,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-13 22:04:29,572 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:29,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:29,572 INFO L85 PathProgramCache]: Analyzing trace with hash -724357054, now seen corresponding path program 1 times [2022-07-13 22:04:29,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:29,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979720474] [2022-07-13 22:04:29,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:29,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:29,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:29,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:29,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979720474] [2022-07-13 22:04:29,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979720474] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:29,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:29,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:04:29,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476750964] [2022-07-13 22:04:29,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:29,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:04:29,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:29,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:04:29,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:04:29,664 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:04:29,665 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 194 transitions, 705 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,665 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:29,665 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:04:29,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:30,378 INFO L129 PetriNetUnfolder]: 542/2054 cut-off events. [2022-07-13 22:04:30,378 INFO L130 PetriNetUnfolder]: For 13418/13445 co-relation queries the response was YES. [2022-07-13 22:04:30,392 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8126 conditions, 2054 events. 542/2054 cut-off events. For 13418/13445 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 15362 event pairs, 182 based on Foata normal form. 2/1993 useless extension candidates. Maximal degree in co-relation 8038. Up to 443 conditions per place. [2022-07-13 22:04:30,396 INFO L132 encePairwiseOnDemand]: 187/210 looper letters, 125 selfloop transitions, 49 changer transitions 98/415 dead transitions. [2022-07-13 22:04:30,396 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 415 transitions, 2872 flow [2022-07-13 22:04:30,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-13 22:04:30,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-13 22:04:30,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5513 transitions. [2022-07-13 22:04:30,399 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7721288515406163 [2022-07-13 22:04:30,399 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5513 transitions. [2022-07-13 22:04:30,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5513 transitions. [2022-07-13 22:04:30,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:30,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5513 transitions. [2022-07-13 22:04:30,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 162.14705882352942) internal successors, (5513), 34 states have internal predecessors, (5513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:30,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:30,406 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:30,406 INFO L186 Difference]: Start difference. First operand has 272 places, 194 transitions, 705 flow. Second operand 34 states and 5513 transitions. [2022-07-13 22:04:30,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 415 transitions, 2872 flow [2022-07-13 22:04:30,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 415 transitions, 2863 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-07-13 22:04:30,431 INFO L242 Difference]: Finished difference. Result has 333 places, 237 transitions, 1389 flow [2022-07-13 22:04:30,431 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1389, PETRI_PLACES=333, PETRI_TRANSITIONS=237} [2022-07-13 22:04:30,431 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 146 predicate places. [2022-07-13 22:04:30,431 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 237 transitions, 1389 flow [2022-07-13 22:04:30,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:30,432 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:30,432 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:30,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-13 22:04:30,432 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:30,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:30,432 INFO L85 PathProgramCache]: Analyzing trace with hash 845494072, now seen corresponding path program 1 times [2022-07-13 22:04:30,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:30,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544575652] [2022-07-13 22:04:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:30,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:30,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:30,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:30,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544575652] [2022-07-13 22:04:30,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544575652] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:30,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:30,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:30,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055465901] [2022-07-13 22:04:30,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:30,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:30,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:30,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:30,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:30,449 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-07-13 22:04:30,449 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 237 transitions, 1389 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:30,449 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:30,449 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-07-13 22:04:30,449 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:30,678 INFO L129 PetriNetUnfolder]: 265/1750 cut-off events. [2022-07-13 22:04:30,678 INFO L130 PetriNetUnfolder]: For 24591/24775 co-relation queries the response was YES. [2022-07-13 22:04:30,690 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8742 conditions, 1750 events. 265/1750 cut-off events. For 24591/24775 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 13259 event pairs, 207 based on Foata normal form. 52/1732 useless extension candidates. Maximal degree in co-relation 8625. Up to 210 conditions per place. [2022-07-13 22:04:30,693 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 14 selfloop transitions, 3 changer transitions 2/243 dead transitions. [2022-07-13 22:04:30,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 243 transitions, 1440 flow [2022-07-13 22:04:30,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:30,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:30,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-07-13 22:04:30,694 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-07-13 22:04:30,694 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-07-13 22:04:30,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-07-13 22:04:30,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:30,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-07-13 22:04:30,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:30,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:30,695 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:30,695 INFO L186 Difference]: Start difference. First operand has 333 places, 237 transitions, 1389 flow. Second operand 3 states and 591 transitions. [2022-07-13 22:04:30,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 243 transitions, 1440 flow [2022-07-13 22:04:30,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 243 transitions, 1180 flow, removed 129 selfloop flow, removed 13 redundant places. [2022-07-13 22:04:30,741 INFO L242 Difference]: Finished difference. Result has 306 places, 238 transitions, 1148 flow [2022-07-13 22:04:30,741 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1148, PETRI_PLACES=306, PETRI_TRANSITIONS=238} [2022-07-13 22:04:30,741 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 119 predicate places. [2022-07-13 22:04:30,741 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 238 transitions, 1148 flow [2022-07-13 22:04:30,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:30,742 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:30,742 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:30,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-13 22:04:30,742 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:30,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:30,742 INFO L85 PathProgramCache]: Analyzing trace with hash 51948910, now seen corresponding path program 2 times [2022-07-13 22:04:30,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:30,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348865673] [2022-07-13 22:04:30,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:30,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:30,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:30,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:30,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348865673] [2022-07-13 22:04:30,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348865673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:30,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:30,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:04:30,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019184337] [2022-07-13 22:04:30,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:30,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:04:30,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:30,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:04:30,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:04:30,851 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:04:30,852 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 238 transitions, 1148 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:30,852 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:30,852 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:04:30,852 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:31,599 INFO L129 PetriNetUnfolder]: 683/2638 cut-off events. [2022-07-13 22:04:31,599 INFO L130 PetriNetUnfolder]: For 25050/25076 co-relation queries the response was YES. [2022-07-13 22:04:31,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12883 conditions, 2638 events. 683/2638 cut-off events. For 25050/25076 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 20528 event pairs, 393 based on Foata normal form. 2/2550 useless extension candidates. Maximal degree in co-relation 12777. Up to 1198 conditions per place. [2022-07-13 22:04:31,624 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 177 selfloop transitions, 26 changer transitions 49/396 dead transitions. [2022-07-13 22:04:31,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 396 transitions, 3300 flow [2022-07-13 22:04:31,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-13 22:04:31,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-13 22:04:31,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4191 transitions. [2022-07-13 22:04:31,626 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7675824175824176 [2022-07-13 22:04:31,627 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4191 transitions. [2022-07-13 22:04:31,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4191 transitions. [2022-07-13 22:04:31,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:31,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4191 transitions. [2022-07-13 22:04:31,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 161.19230769230768) internal successors, (4191), 26 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:31,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:31,632 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:31,632 INFO L186 Difference]: Start difference. First operand has 306 places, 238 transitions, 1148 flow. Second operand 26 states and 4191 transitions. [2022-07-13 22:04:31,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 396 transitions, 3300 flow [2022-07-13 22:04:31,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 396 transitions, 3297 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:04:31,689 INFO L242 Difference]: Finished difference. Result has 353 places, 261 transitions, 1636 flow [2022-07-13 22:04:31,689 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1145, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1636, PETRI_PLACES=353, PETRI_TRANSITIONS=261} [2022-07-13 22:04:31,689 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 166 predicate places. [2022-07-13 22:04:31,690 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 261 transitions, 1636 flow [2022-07-13 22:04:31,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:31,690 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:31,690 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:31,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-13 22:04:31,690 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:31,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:31,690 INFO L85 PathProgramCache]: Analyzing trace with hash 2029902456, now seen corresponding path program 1 times [2022-07-13 22:04:31,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:31,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785069546] [2022-07-13 22:04:31,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:31,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:31,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:31,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:31,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785069546] [2022-07-13 22:04:31,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785069546] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:31,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:31,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:31,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333396425] [2022-07-13 22:04:31,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:31,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:31,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:31,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:31,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:31,716 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-07-13 22:04:31,716 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 261 transitions, 1636 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:31,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:31,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-07-13 22:04:31,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:31,864 INFO L129 PetriNetUnfolder]: 135/1212 cut-off events. [2022-07-13 22:04:31,864 INFO L130 PetriNetUnfolder]: For 12986/13036 co-relation queries the response was YES. [2022-07-13 22:04:31,874 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5452 conditions, 1212 events. 135/1212 cut-off events. For 12986/13036 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 8353 event pairs, 112 based on Foata normal form. 24/1199 useless extension candidates. Maximal degree in co-relation 5323. Up to 119 conditions per place. [2022-07-13 22:04:31,876 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 15 selfloop transitions, 5 changer transitions 10/239 dead transitions. [2022-07-13 22:04:31,876 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 239 transitions, 1471 flow [2022-07-13 22:04:31,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:31,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:31,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-07-13 22:04:31,877 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-07-13 22:04:31,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-07-13 22:04:31,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-07-13 22:04:31,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:31,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-07-13 22:04:31,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:31,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:31,880 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:31,880 INFO L186 Difference]: Start difference. First operand has 353 places, 261 transitions, 1636 flow. Second operand 3 states and 591 transitions. [2022-07-13 22:04:31,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 239 transitions, 1471 flow [2022-07-13 22:04:31,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 239 transitions, 1164 flow, removed 139 selfloop flow, removed 18 redundant places. [2022-07-13 22:04:31,927 INFO L242 Difference]: Finished difference. Result has 322 places, 226 transitions, 1090 flow [2022-07-13 22:04:31,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1103, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1090, PETRI_PLACES=322, PETRI_TRANSITIONS=226} [2022-07-13 22:04:31,927 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 135 predicate places. [2022-07-13 22:04:31,927 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 226 transitions, 1090 flow [2022-07-13 22:04:31,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:31,928 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:31,928 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:31,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-13 22:04:31,928 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:31,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:31,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1875410008, now seen corresponding path program 3 times [2022-07-13 22:04:31,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:31,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261348855] [2022-07-13 22:04:31,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:31,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:32,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:32,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:32,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261348855] [2022-07-13 22:04:32,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261348855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:32,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:32,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:04:32,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354214380] [2022-07-13 22:04:32,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:32,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:04:32,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:32,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:04:32,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:04:32,046 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:04:32,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 226 transitions, 1090 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:32,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:32,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:04:32,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:32,697 INFO L129 PetriNetUnfolder]: 375/1672 cut-off events. [2022-07-13 22:04:32,697 INFO L130 PetriNetUnfolder]: For 13839/13868 co-relation queries the response was YES. [2022-07-13 22:04:32,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7453 conditions, 1672 events. 375/1672 cut-off events. For 13839/13868 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11701 event pairs, 197 based on Foata normal form. 1/1624 useless extension candidates. Maximal degree in co-relation 7339. Up to 580 conditions per place. [2022-07-13 22:04:32,712 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 128 selfloop transitions, 30 changer transitions 49/352 dead transitions. [2022-07-13 22:04:32,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 352 transitions, 2663 flow [2022-07-13 22:04:32,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-13 22:04:32,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-13 22:04:32,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4351 transitions. [2022-07-13 22:04:32,715 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7673721340388007 [2022-07-13 22:04:32,715 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4351 transitions. [2022-07-13 22:04:32,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4351 transitions. [2022-07-13 22:04:32,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:32,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4351 transitions. [2022-07-13 22:04:32,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 161.14814814814815) internal successors, (4351), 27 states have internal predecessors, (4351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:32,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:32,720 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:32,720 INFO L186 Difference]: Start difference. First operand has 322 places, 226 transitions, 1090 flow. Second operand 27 states and 4351 transitions. [2022-07-13 22:04:32,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 352 transitions, 2663 flow [2022-07-13 22:04:32,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 352 transitions, 2631 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-07-13 22:04:32,761 INFO L242 Difference]: Finished difference. Result has 357 places, 248 transitions, 1445 flow [2022-07-13 22:04:32,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1445, PETRI_PLACES=357, PETRI_TRANSITIONS=248} [2022-07-13 22:04:32,762 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 170 predicate places. [2022-07-13 22:04:32,762 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 248 transitions, 1445 flow [2022-07-13 22:04:32,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:32,762 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:32,762 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:32,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-13 22:04:32,762 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:32,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:32,763 INFO L85 PathProgramCache]: Analyzing trace with hash -147000172, now seen corresponding path program 1 times [2022-07-13 22:04:32,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:32,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671809325] [2022-07-13 22:04:32,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:32,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:32,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:32,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:32,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671809325] [2022-07-13 22:04:32,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671809325] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:32,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:32,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:04:32,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550076985] [2022-07-13 22:04:32,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:32,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:04:32,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:32,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:04:32,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:04:32,882 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:04:32,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 248 transitions, 1445 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:32,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:32,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:04:32,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:33,828 INFO L129 PetriNetUnfolder]: 526/2048 cut-off events. [2022-07-13 22:04:33,828 INFO L130 PetriNetUnfolder]: For 26454/26510 co-relation queries the response was YES. [2022-07-13 22:04:33,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10889 conditions, 2048 events. 526/2048 cut-off events. For 26454/26510 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 14752 event pairs, 245 based on Foata normal form. 1/1996 useless extension candidates. Maximal degree in co-relation 10758. Up to 753 conditions per place. [2022-07-13 22:04:33,856 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 171 selfloop transitions, 25 changer transitions 70/417 dead transitions. [2022-07-13 22:04:33,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 417 transitions, 4670 flow [2022-07-13 22:04:33,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-13 22:04:33,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-07-13 22:04:33,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7023 transitions. [2022-07-13 22:04:33,860 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7600649350649351 [2022-07-13 22:04:33,860 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7023 transitions. [2022-07-13 22:04:33,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7023 transitions. [2022-07-13 22:04:33,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:33,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7023 transitions. [2022-07-13 22:04:33,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.61363636363637) internal successors, (7023), 44 states have internal predecessors, (7023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:33,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:33,869 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:33,869 INFO L186 Difference]: Start difference. First operand has 357 places, 248 transitions, 1445 flow. Second operand 44 states and 7023 transitions. [2022-07-13 22:04:33,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 417 transitions, 4670 flow [2022-07-13 22:04:33,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 417 transitions, 4539 flow, removed 59 selfloop flow, removed 12 redundant places. [2022-07-13 22:04:33,945 INFO L242 Difference]: Finished difference. Result has 413 places, 274 transitions, 1914 flow [2022-07-13 22:04:33,946 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1914, PETRI_PLACES=413, PETRI_TRANSITIONS=274} [2022-07-13 22:04:33,946 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 226 predicate places. [2022-07-13 22:04:33,946 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 274 transitions, 1914 flow [2022-07-13 22:04:33,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:33,946 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:33,946 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:33,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-13 22:04:33,947 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:33,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:33,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1251028272, now seen corresponding path program 4 times [2022-07-13 22:04:33,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:33,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965209331] [2022-07-13 22:04:33,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:33,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:34,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:34,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:34,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965209331] [2022-07-13 22:04:34,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965209331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:34,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:34,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:04:34,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583319454] [2022-07-13 22:04:34,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:34,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:04:34,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:34,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:04:34,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:04:34,085 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:04:34,086 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 274 transitions, 1914 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:34,086 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:34,086 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:04:34,086 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:35,105 INFO L129 PetriNetUnfolder]: 579/2226 cut-off events. [2022-07-13 22:04:35,106 INFO L130 PetriNetUnfolder]: For 43896/43931 co-relation queries the response was YES. [2022-07-13 22:04:35,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13344 conditions, 2226 events. 579/2226 cut-off events. For 43896/43931 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 16466 event pairs, 278 based on Foata normal form. 10/2180 useless extension candidates. Maximal degree in co-relation 13185. Up to 817 conditions per place. [2022-07-13 22:04:35,132 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 183 selfloop transitions, 35 changer transitions 74/441 dead transitions. [2022-07-13 22:04:35,132 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 441 transitions, 4416 flow [2022-07-13 22:04:35,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-13 22:04:35,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-07-13 22:04:35,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7025 transitions. [2022-07-13 22:04:35,138 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7602813852813853 [2022-07-13 22:04:35,138 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7025 transitions. [2022-07-13 22:04:35,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7025 transitions. [2022-07-13 22:04:35,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:35,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7025 transitions. [2022-07-13 22:04:35,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.6590909090909) internal successors, (7025), 44 states have internal predecessors, (7025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:35,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:35,147 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:35,147 INFO L186 Difference]: Start difference. First operand has 413 places, 274 transitions, 1914 flow. Second operand 44 states and 7025 transitions. [2022-07-13 22:04:35,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 441 transitions, 4416 flow [2022-07-13 22:04:35,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 441 transitions, 4016 flow, removed 200 selfloop flow, removed 29 redundant places. [2022-07-13 22:04:35,262 INFO L242 Difference]: Finished difference. Result has 432 places, 297 transitions, 2073 flow [2022-07-13 22:04:35,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2073, PETRI_PLACES=432, PETRI_TRANSITIONS=297} [2022-07-13 22:04:35,263 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 245 predicate places. [2022-07-13 22:04:35,263 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 297 transitions, 2073 flow [2022-07-13 22:04:35,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:35,263 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:35,263 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:35,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-13 22:04:35,263 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:35,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:35,264 INFO L85 PathProgramCache]: Analyzing trace with hash -792355658, now seen corresponding path program 5 times [2022-07-13 22:04:35,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:35,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411149812] [2022-07-13 22:04:35,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:35,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:35,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:35,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:35,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411149812] [2022-07-13 22:04:35,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411149812] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:35,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:35,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:04:35,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447804727] [2022-07-13 22:04:35,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:35,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:04:35,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:35,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:04:35,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:04:35,368 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:04:35,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 297 transitions, 2073 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:35,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:35,369 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:04:35,369 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:36,595 INFO L129 PetriNetUnfolder]: 652/2469 cut-off events. [2022-07-13 22:04:36,595 INFO L130 PetriNetUnfolder]: For 42227/42269 co-relation queries the response was YES. [2022-07-13 22:04:36,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14893 conditions, 2469 events. 652/2469 cut-off events. For 42227/42269 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 18857 event pairs, 345 based on Foata normal form. 11/2421 useless extension candidates. Maximal degree in co-relation 14726. Up to 789 conditions per place. [2022-07-13 22:04:36,628 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 215 selfloop transitions, 43 changer transitions 89/496 dead transitions. [2022-07-13 22:04:36,628 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 496 transitions, 5865 flow [2022-07-13 22:04:36,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-07-13 22:04:36,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-07-13 22:04:36,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7972 transitions. [2022-07-13 22:04:36,633 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7592380952380953 [2022-07-13 22:04:36,633 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7972 transitions. [2022-07-13 22:04:36,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7972 transitions. [2022-07-13 22:04:36,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:36,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7972 transitions. [2022-07-13 22:04:36,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 159.44) internal successors, (7972), 50 states have internal predecessors, (7972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:36,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:36,642 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:36,643 INFO L186 Difference]: Start difference. First operand has 432 places, 297 transitions, 2073 flow. Second operand 50 states and 7972 transitions. [2022-07-13 22:04:36,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 496 transitions, 5865 flow [2022-07-13 22:04:36,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 496 transitions, 5217 flow, removed 324 selfloop flow, removed 22 redundant places. [2022-07-13 22:04:36,760 INFO L242 Difference]: Finished difference. Result has 475 places, 316 transitions, 2514 flow [2022-07-13 22:04:36,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=2514, PETRI_PLACES=475, PETRI_TRANSITIONS=316} [2022-07-13 22:04:36,761 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 288 predicate places. [2022-07-13 22:04:36,761 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 316 transitions, 2514 flow [2022-07-13 22:04:36,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:36,761 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:36,761 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:36,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-13 22:04:36,761 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:36,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:36,761 INFO L85 PathProgramCache]: Analyzing trace with hash 642885540, now seen corresponding path program 6 times [2022-07-13 22:04:36,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:36,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273198909] [2022-07-13 22:04:36,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:36,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:36,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:36,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:36,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273198909] [2022-07-13 22:04:36,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273198909] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:36,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:36,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:04:36,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108329342] [2022-07-13 22:04:36,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:36,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:04:36,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:36,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:04:36,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:04:36,875 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:04:36,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 316 transitions, 2514 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:36,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:36,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:04:36,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:38,070 INFO L129 PetriNetUnfolder]: 650/2419 cut-off events. [2022-07-13 22:04:38,071 INFO L130 PetriNetUnfolder]: For 50402/50447 co-relation queries the response was YES. [2022-07-13 22:04:38,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15883 conditions, 2419 events. 650/2419 cut-off events. For 50402/50447 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 18510 event pairs, 245 based on Foata normal form. 10/2373 useless extension candidates. Maximal degree in co-relation 15690. Up to 735 conditions per place. [2022-07-13 22:04:38,114 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 299 selfloop transitions, 52 changer transitions 109/609 dead transitions. [2022-07-13 22:04:38,114 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 609 transitions, 8262 flow [2022-07-13 22:04:38,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-13 22:04:38,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-07-13 22:04:38,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 9230 transitions. [2022-07-13 22:04:38,118 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7577996715927751 [2022-07-13 22:04:38,119 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 9230 transitions. [2022-07-13 22:04:38,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 9230 transitions. [2022-07-13 22:04:38,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:38,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 9230 transitions. [2022-07-13 22:04:38,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 159.13793103448276) internal successors, (9230), 58 states have internal predecessors, (9230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:38,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:38,130 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:38,130 INFO L186 Difference]: Start difference. First operand has 475 places, 316 transitions, 2514 flow. Second operand 58 states and 9230 transitions. [2022-07-13 22:04:38,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 609 transitions, 8262 flow [2022-07-13 22:04:38,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 609 transitions, 7490 flow, removed 375 selfloop flow, removed 29 redundant places. [2022-07-13 22:04:38,305 INFO L242 Difference]: Finished difference. Result has 514 places, 318 transitions, 2706 flow [2022-07-13 22:04:38,305 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2379, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=2706, PETRI_PLACES=514, PETRI_TRANSITIONS=318} [2022-07-13 22:04:38,305 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 327 predicate places. [2022-07-13 22:04:38,305 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 318 transitions, 2706 flow [2022-07-13 22:04:38,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:38,306 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:38,306 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:38,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-13 22:04:38,306 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:38,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:38,306 INFO L85 PathProgramCache]: Analyzing trace with hash 365761050, now seen corresponding path program 7 times [2022-07-13 22:04:38,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:38,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218530521] [2022-07-13 22:04:38,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:38,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:38,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:38,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:38,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218530521] [2022-07-13 22:04:38,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218530521] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:38,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:38,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:04:38,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581875731] [2022-07-13 22:04:38,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:38,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:04:38,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:38,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:04:38,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:04:38,437 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:04:38,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 318 transitions, 2706 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:38,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:38,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:04:38,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:39,854 INFO L129 PetriNetUnfolder]: 694/2549 cut-off events. [2022-07-13 22:04:39,855 INFO L130 PetriNetUnfolder]: For 49590/49645 co-relation queries the response was YES. [2022-07-13 22:04:39,898 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17002 conditions, 2549 events. 694/2549 cut-off events. For 49590/49645 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 19901 event pairs, 274 based on Foata normal form. 25/2512 useless extension candidates. Maximal degree in co-relation 16788. Up to 869 conditions per place. [2022-07-13 22:04:39,905 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 220 selfloop transitions, 56 changer transitions 88/513 dead transitions. [2022-07-13 22:04:39,906 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 513 transitions, 6934 flow [2022-07-13 22:04:39,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-13 22:04:39,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-07-13 22:04:39,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 8594 transitions. [2022-07-13 22:04:39,909 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7578483245149912 [2022-07-13 22:04:39,910 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 8594 transitions. [2022-07-13 22:04:39,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 8594 transitions. [2022-07-13 22:04:39,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:39,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 8594 transitions. [2022-07-13 22:04:39,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 159.14814814814815) internal successors, (8594), 54 states have internal predecessors, (8594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:39,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:39,920 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:39,920 INFO L186 Difference]: Start difference. First operand has 514 places, 318 transitions, 2706 flow. Second operand 54 states and 8594 transitions. [2022-07-13 22:04:39,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 513 transitions, 6934 flow [2022-07-13 22:04:40,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 513 transitions, 6539 flow, removed 74 selfloop flow, removed 47 redundant places. [2022-07-13 22:04:40,119 INFO L242 Difference]: Finished difference. Result has 515 places, 334 transitions, 3042 flow [2022-07-13 22:04:40,119 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2552, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=3042, PETRI_PLACES=515, PETRI_TRANSITIONS=334} [2022-07-13 22:04:40,120 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 328 predicate places. [2022-07-13 22:04:40,120 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 334 transitions, 3042 flow [2022-07-13 22:04:40,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:40,120 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:40,120 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:40,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-07-13 22:04:40,121 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:40,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:40,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1704453830, now seen corresponding path program 8 times [2022-07-13 22:04:40,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:40,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625510105] [2022-07-13 22:04:40,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:40,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:40,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:40,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:40,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625510105] [2022-07-13 22:04:40,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625510105] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:40,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:40,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:04:40,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879398777] [2022-07-13 22:04:40,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:40,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:04:40,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:40,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:04:40,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:04:40,234 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:04:40,235 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 334 transitions, 3042 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:40,235 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:40,235 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:04:40,235 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:41,471 INFO L129 PetriNetUnfolder]: 705/2592 cut-off events. [2022-07-13 22:04:41,471 INFO L130 PetriNetUnfolder]: For 64910/64966 co-relation queries the response was YES. [2022-07-13 22:04:41,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18701 conditions, 2592 events. 705/2592 cut-off events. For 64910/64966 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 20318 event pairs, 383 based on Foata normal form. 15/2539 useless extension candidates. Maximal degree in co-relation 18488. Up to 899 conditions per place. [2022-07-13 22:04:41,518 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 236 selfloop transitions, 42 changer transitions 89/516 dead transitions. [2022-07-13 22:04:41,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 516 transitions, 7988 flow [2022-07-13 22:04:41,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-07-13 22:04:41,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-07-13 22:04:41,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8133 transitions. [2022-07-13 22:04:41,522 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7593837535014005 [2022-07-13 22:04:41,522 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8133 transitions. [2022-07-13 22:04:41,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8133 transitions. [2022-07-13 22:04:41,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:41,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8133 transitions. [2022-07-13 22:04:41,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 159.47058823529412) internal successors, (8133), 51 states have internal predecessors, (8133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:41,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:41,532 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:41,532 INFO L186 Difference]: Start difference. First operand has 515 places, 334 transitions, 3042 flow. Second operand 51 states and 8133 transitions. [2022-07-13 22:04:41,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 516 transitions, 7988 flow [2022-07-13 22:04:41,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 516 transitions, 7078 flow, removed 444 selfloop flow, removed 36 redundant places. [2022-07-13 22:04:41,724 INFO L242 Difference]: Finished difference. Result has 533 places, 354 transitions, 3586 flow [2022-07-13 22:04:41,724 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2932, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=3586, PETRI_PLACES=533, PETRI_TRANSITIONS=354} [2022-07-13 22:04:41,724 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 346 predicate places. [2022-07-13 22:04:41,724 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 354 transitions, 3586 flow [2022-07-13 22:04:41,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:41,725 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:41,725 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:41,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-07-13 22:04:41,725 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:41,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:41,725 INFO L85 PathProgramCache]: Analyzing trace with hash 191725786, now seen corresponding path program 9 times [2022-07-13 22:04:41,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:41,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172987859] [2022-07-13 22:04:41,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:41,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:41,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:41,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:41,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172987859] [2022-07-13 22:04:41,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172987859] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:41,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:41,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:04:41,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715276036] [2022-07-13 22:04:41,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:41,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:04:41,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:41,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:04:41,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:04:41,838 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:04:41,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 354 transitions, 3586 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:41,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:41,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:04:41,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:42,976 INFO L129 PetriNetUnfolder]: 692/2586 cut-off events. [2022-07-13 22:04:42,977 INFO L130 PetriNetUnfolder]: For 69167/69230 co-relation queries the response was YES. [2022-07-13 22:04:43,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18900 conditions, 2586 events. 692/2586 cut-off events. For 69167/69230 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 20421 event pairs, 300 based on Foata normal form. 25/2537 useless extension candidates. Maximal degree in co-relation 18676. Up to 927 conditions per place. [2022-07-13 22:04:43,025 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 250 selfloop transitions, 67 changer transitions 79/545 dead transitions. [2022-07-13 22:04:43,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 545 transitions, 8540 flow [2022-07-13 22:04:43,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-07-13 22:04:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-07-13 22:04:43,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 6702 transitions. [2022-07-13 22:04:43,029 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7598639455782313 [2022-07-13 22:04:43,029 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 6702 transitions. [2022-07-13 22:04:43,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 6702 transitions. [2022-07-13 22:04:43,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:43,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 6702 transitions. [2022-07-13 22:04:43,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 159.57142857142858) internal successors, (6702), 42 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:43,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:43,037 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:43,037 INFO L186 Difference]: Start difference. First operand has 533 places, 354 transitions, 3586 flow. Second operand 42 states and 6702 transitions. [2022-07-13 22:04:43,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 545 transitions, 8540 flow [2022-07-13 22:04:43,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 545 transitions, 7732 flow, removed 404 selfloop flow, removed 36 redundant places. [2022-07-13 22:04:43,301 INFO L242 Difference]: Finished difference. Result has 532 places, 376 transitions, 4069 flow [2022-07-13 22:04:43,301 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3410, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=4069, PETRI_PLACES=532, PETRI_TRANSITIONS=376} [2022-07-13 22:04:43,302 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 345 predicate places. [2022-07-13 22:04:43,302 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 376 transitions, 4069 flow [2022-07-13 22:04:43,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:43,302 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:43,302 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:43,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-07-13 22:04:43,303 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:43,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:43,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1112861422, now seen corresponding path program 10 times [2022-07-13 22:04:43,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:43,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232207309] [2022-07-13 22:04:43,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:43,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:43,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:43,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:43,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232207309] [2022-07-13 22:04:43,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232207309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:43,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:43,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:04:43,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144339138] [2022-07-13 22:04:43,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:43,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:04:43,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:43,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:04:43,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:04:43,401 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:04:43,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 376 transitions, 4069 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:43,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:43,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:04:43,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:44,627 INFO L129 PetriNetUnfolder]: 690/2600 cut-off events. [2022-07-13 22:04:44,627 INFO L130 PetriNetUnfolder]: For 61328/61384 co-relation queries the response was YES. [2022-07-13 22:04:44,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18540 conditions, 2600 events. 690/2600 cut-off events. For 61328/61384 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 20641 event pairs, 324 based on Foata normal form. 11/2537 useless extension candidates. Maximal degree in co-relation 18318. Up to 924 conditions per place. [2022-07-13 22:04:44,677 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 301 selfloop transitions, 80 changer transitions 93/623 dead transitions. [2022-07-13 22:04:44,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 623 transitions, 10587 flow [2022-07-13 22:04:44,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-07-13 22:04:44,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-07-13 22:04:44,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7963 transitions. [2022-07-13 22:04:44,681 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7583809523809524 [2022-07-13 22:04:44,681 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7963 transitions. [2022-07-13 22:04:44,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7963 transitions. [2022-07-13 22:04:44,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:44,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7963 transitions. [2022-07-13 22:04:44,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 159.26) internal successors, (7963), 50 states have internal predecessors, (7963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:44,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:44,690 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:44,690 INFO L186 Difference]: Start difference. First operand has 532 places, 376 transitions, 4069 flow. Second operand 50 states and 7963 transitions. [2022-07-13 22:04:44,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 623 transitions, 10587 flow [2022-07-13 22:04:44,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 623 transitions, 9889 flow, removed 261 selfloop flow, removed 24 redundant places. [2022-07-13 22:04:44,970 INFO L242 Difference]: Finished difference. Result has 573 places, 409 transitions, 4993 flow [2022-07-13 22:04:44,970 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3806, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=4993, PETRI_PLACES=573, PETRI_TRANSITIONS=409} [2022-07-13 22:04:44,970 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 386 predicate places. [2022-07-13 22:04:44,971 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 409 transitions, 4993 flow [2022-07-13 22:04:44,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:44,971 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:44,971 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:44,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-07-13 22:04:44,971 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:44,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:44,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1951022846, now seen corresponding path program 11 times [2022-07-13 22:04:44,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:44,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824486441] [2022-07-13 22:04:44,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:44,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:45,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:45,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824486441] [2022-07-13 22:04:45,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824486441] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:45,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:45,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:04:45,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739487055] [2022-07-13 22:04:45,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:45,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:04:45,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:45,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:04:45,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:04:45,078 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:04:45,078 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 409 transitions, 4993 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:45,079 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:45,079 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:04:45,079 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:46,403 INFO L129 PetriNetUnfolder]: 684/2615 cut-off events. [2022-07-13 22:04:46,403 INFO L130 PetriNetUnfolder]: For 67731/67805 co-relation queries the response was YES. [2022-07-13 22:04:46,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19035 conditions, 2615 events. 684/2615 cut-off events. For 67731/67805 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 20883 event pairs, 276 based on Foata normal form. 36/2586 useless extension candidates. Maximal degree in co-relation 18789. Up to 900 conditions per place. [2022-07-13 22:04:46,456 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 268 selfloop transitions, 107 changer transitions 82/606 dead transitions. [2022-07-13 22:04:46,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 606 transitions, 10351 flow [2022-07-13 22:04:46,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-13 22:04:46,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-07-13 22:04:46,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7332 transitions. [2022-07-13 22:04:46,459 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7590062111801242 [2022-07-13 22:04:46,459 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7332 transitions. [2022-07-13 22:04:46,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7332 transitions. [2022-07-13 22:04:46,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:46,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7332 transitions. [2022-07-13 22:04:46,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.3913043478261) internal successors, (7332), 46 states have internal predecessors, (7332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:46,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:46,468 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:46,468 INFO L186 Difference]: Start difference. First operand has 573 places, 409 transitions, 4993 flow. Second operand 46 states and 7332 transitions. [2022-07-13 22:04:46,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 606 transitions, 10351 flow [2022-07-13 22:04:46,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 606 transitions, 9296 flow, removed 483 selfloop flow, removed 36 redundant places. [2022-07-13 22:04:46,805 INFO L242 Difference]: Finished difference. Result has 576 places, 419 transitions, 4951 flow [2022-07-13 22:04:46,806 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4429, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=4951, PETRI_PLACES=576, PETRI_TRANSITIONS=419} [2022-07-13 22:04:46,806 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 389 predicate places. [2022-07-13 22:04:46,806 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 419 transitions, 4951 flow [2022-07-13 22:04:46,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:46,806 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:46,807 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:46,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-07-13 22:04:46,807 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:46,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:46,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1823463120, now seen corresponding path program 12 times [2022-07-13 22:04:46,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:46,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435662706] [2022-07-13 22:04:46,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:46,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:46,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:46,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:46,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435662706] [2022-07-13 22:04:46,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435662706] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:46,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:46,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:04:46,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360083045] [2022-07-13 22:04:46,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:46,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:04:46,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:46,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:04:46,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:04:46,930 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:04:46,931 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 419 transitions, 4951 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:46,931 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:46,931 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:04:46,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:48,386 INFO L129 PetriNetUnfolder]: 744/2777 cut-off events. [2022-07-13 22:04:48,386 INFO L130 PetriNetUnfolder]: For 68872/68940 co-relation queries the response was YES. [2022-07-13 22:04:48,434 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20420 conditions, 2777 events. 744/2777 cut-off events. For 68872/68940 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 22437 event pairs, 346 based on Foata normal form. 23/2735 useless extension candidates. Maximal degree in co-relation 20176. Up to 900 conditions per place. [2022-07-13 22:04:48,443 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 262 selfloop transitions, 109 changer transitions 92/612 dead transitions. [2022-07-13 22:04:48,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 612 transitions, 10117 flow [2022-07-13 22:04:48,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-07-13 22:04:48,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-07-13 22:04:48,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8287 transitions. [2022-07-13 22:04:48,447 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7588827838827839 [2022-07-13 22:04:48,447 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8287 transitions. [2022-07-13 22:04:48,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8287 transitions. [2022-07-13 22:04:48,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:48,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8287 transitions. [2022-07-13 22:04:48,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 159.3653846153846) internal successors, (8287), 52 states have internal predecessors, (8287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:48,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:48,457 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:48,457 INFO L186 Difference]: Start difference. First operand has 576 places, 419 transitions, 4951 flow. Second operand 52 states and 8287 transitions. [2022-07-13 22:04:48,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 612 transitions, 10117 flow [2022-07-13 22:04:48,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 612 transitions, 9568 flow, removed 240 selfloop flow, removed 38 redundant places. [2022-07-13 22:04:48,770 INFO L242 Difference]: Finished difference. Result has 601 places, 446 transitions, 5737 flow [2022-07-13 22:04:48,770 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4782, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=5737, PETRI_PLACES=601, PETRI_TRANSITIONS=446} [2022-07-13 22:04:48,770 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 414 predicate places. [2022-07-13 22:04:48,770 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 446 transitions, 5737 flow [2022-07-13 22:04:48,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:48,771 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:48,771 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:48,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-07-13 22:04:48,771 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:48,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:48,772 INFO L85 PathProgramCache]: Analyzing trace with hash -340446058, now seen corresponding path program 13 times [2022-07-13 22:04:48,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:48,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977874203] [2022-07-13 22:04:48,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:48,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:48,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:48,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:48,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977874203] [2022-07-13 22:04:48,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977874203] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:48,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:48,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:04:48,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272323112] [2022-07-13 22:04:48,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:48,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:04:48,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:48,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:04:48,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:04:48,882 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:04:48,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 446 transitions, 5737 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:48,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:48,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:04:48,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:49,923 INFO L129 PetriNetUnfolder]: 735/2727 cut-off events. [2022-07-13 22:04:49,923 INFO L130 PetriNetUnfolder]: For 71828/71908 co-relation queries the response was YES. [2022-07-13 22:04:49,970 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20498 conditions, 2727 events. 735/2727 cut-off events. For 71828/71908 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 21926 event pairs, 292 based on Foata normal form. 40/2693 useless extension candidates. Maximal degree in co-relation 20246. Up to 948 conditions per place. [2022-07-13 22:04:49,979 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 261 selfloop transitions, 135 changer transitions 60/605 dead transitions. [2022-07-13 22:04:49,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 605 transitions, 10141 flow [2022-07-13 22:04:49,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:04:49,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:04:49,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4809 transitions. [2022-07-13 22:04:49,981 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2022-07-13 22:04:49,981 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4809 transitions. [2022-07-13 22:04:49,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4809 transitions. [2022-07-13 22:04:49,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:49,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4809 transitions. [2022-07-13 22:04:49,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.3) internal successors, (4809), 30 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:49,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:49,987 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:49,987 INFO L186 Difference]: Start difference. First operand has 601 places, 446 transitions, 5737 flow. Second operand 30 states and 4809 transitions. [2022-07-13 22:04:49,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 605 transitions, 10141 flow [2022-07-13 22:04:50,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 605 transitions, 9609 flow, removed 231 selfloop flow, removed 42 redundant places. [2022-07-13 22:04:50,366 INFO L242 Difference]: Finished difference. Result has 562 places, 464 transitions, 6269 flow [2022-07-13 22:04:50,367 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5511, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6269, PETRI_PLACES=562, PETRI_TRANSITIONS=464} [2022-07-13 22:04:50,367 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 375 predicate places. [2022-07-13 22:04:50,367 INFO L495 AbstractCegarLoop]: Abstraction has has 562 places, 464 transitions, 6269 flow [2022-07-13 22:04:50,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:50,368 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:50,368 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:50,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-07-13 22:04:50,368 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:50,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:50,369 INFO L85 PathProgramCache]: Analyzing trace with hash 193940962, now seen corresponding path program 14 times [2022-07-13 22:04:50,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:50,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208867073] [2022-07-13 22:04:50,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:50,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:50,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:50,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:50,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208867073] [2022-07-13 22:04:50,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208867073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:50,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:50,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:04:50,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688715610] [2022-07-13 22:04:50,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:50,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:04:50,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:50,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:04:50,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:04:50,481 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:04:50,482 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 464 transitions, 6269 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:50,482 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:50,482 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:04:50,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:52,005 INFO L129 PetriNetUnfolder]: 744/2779 cut-off events. [2022-07-13 22:04:52,006 INFO L130 PetriNetUnfolder]: For 67967/68049 co-relation queries the response was YES. [2022-07-13 22:04:52,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20492 conditions, 2779 events. 744/2779 cut-off events. For 67967/68049 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 22459 event pairs, 301 based on Foata normal form. 36/2747 useless extension candidates. Maximal degree in co-relation 20266. Up to 920 conditions per place. [2022-07-13 22:04:52,057 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 302 selfloop transitions, 115 changer transitions 95/661 dead transitions. [2022-07-13 22:04:52,057 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 661 transitions, 11694 flow [2022-07-13 22:04:52,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-13 22:04:52,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-07-13 22:04:52,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 8441 transitions. [2022-07-13 22:04:52,061 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7584007187780772 [2022-07-13 22:04:52,061 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 8441 transitions. [2022-07-13 22:04:52,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 8441 transitions. [2022-07-13 22:04:52,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:52,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 8441 transitions. [2022-07-13 22:04:52,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 159.26415094339623) internal successors, (8441), 53 states have internal predecessors, (8441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:52,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:52,071 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:52,071 INFO L186 Difference]: Start difference. First operand has 562 places, 464 transitions, 6269 flow. Second operand 53 states and 8441 transitions. [2022-07-13 22:04:52,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 661 transitions, 11694 flow [2022-07-13 22:04:52,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 661 transitions, 11371 flow, removed 127 selfloop flow, removed 11 redundant places. [2022-07-13 22:04:52,396 INFO L242 Difference]: Finished difference. Result has 631 places, 470 transitions, 6643 flow [2022-07-13 22:04:52,396 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6060, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=6643, PETRI_PLACES=631, PETRI_TRANSITIONS=470} [2022-07-13 22:04:52,396 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 444 predicate places. [2022-07-13 22:04:52,396 INFO L495 AbstractCegarLoop]: Abstraction has has 631 places, 470 transitions, 6643 flow [2022-07-13 22:04:52,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:52,397 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:52,397 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:52,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-07-13 22:04:52,398 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:52,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:52,398 INFO L85 PathProgramCache]: Analyzing trace with hash -758267650, now seen corresponding path program 15 times [2022-07-13 22:04:52,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:52,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157554309] [2022-07-13 22:04:52,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:52,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:52,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:52,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:52,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157554309] [2022-07-13 22:04:52,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157554309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:52,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:52,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:04:52,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740816882] [2022-07-13 22:04:52,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:52,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:04:52,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:52,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:04:52,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:04:52,504 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:04:52,504 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 470 transitions, 6643 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:52,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:52,505 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:04:52,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:53,777 INFO L129 PetriNetUnfolder]: 721/2664 cut-off events. [2022-07-13 22:04:53,777 INFO L130 PetriNetUnfolder]: For 71988/72064 co-relation queries the response was YES. [2022-07-13 22:04:53,828 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20459 conditions, 2664 events. 721/2664 cut-off events. For 71988/72064 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 21176 event pairs, 308 based on Foata normal form. 29/2619 useless extension candidates. Maximal degree in co-relation 20199. Up to 942 conditions per place. [2022-07-13 22:04:53,837 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 272 selfloop transitions, 138 changer transitions 72/631 dead transitions. [2022-07-13 22:04:53,837 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 631 transitions, 11628 flow [2022-07-13 22:04:53,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-13 22:04:53,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-13 22:04:53,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5441 transitions. [2022-07-13 22:04:53,840 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7620448179271708 [2022-07-13 22:04:53,840 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5441 transitions. [2022-07-13 22:04:53,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5441 transitions. [2022-07-13 22:04:53,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:53,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5441 transitions. [2022-07-13 22:04:53,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 160.02941176470588) internal successors, (5441), 34 states have internal predecessors, (5441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:53,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:53,847 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:53,847 INFO L186 Difference]: Start difference. First operand has 631 places, 470 transitions, 6643 flow. Second operand 34 states and 5441 transitions. [2022-07-13 22:04:53,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 631 transitions, 11628 flow [2022-07-13 22:04:54,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 631 transitions, 10726 flow, removed 351 selfloop flow, removed 42 redundant places. [2022-07-13 22:04:54,197 INFO L242 Difference]: Finished difference. Result has 606 places, 490 transitions, 7277 flow [2022-07-13 22:04:54,197 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6288, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=7277, PETRI_PLACES=606, PETRI_TRANSITIONS=490} [2022-07-13 22:04:54,198 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 419 predicate places. [2022-07-13 22:04:54,198 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 490 transitions, 7277 flow [2022-07-13 22:04:54,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:54,198 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:54,198 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:54,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-07-13 22:04:54,199 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:54,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:54,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1804519258, now seen corresponding path program 16 times [2022-07-13 22:04:54,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:54,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570056338] [2022-07-13 22:04:54,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:54,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:54,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:54,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:54,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570056338] [2022-07-13 22:04:54,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570056338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:54,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:54,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:04:54,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922557685] [2022-07-13 22:04:54,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:54,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:04:54,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:54,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:04:54,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:04:54,324 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:04:54,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 490 transitions, 7277 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:54,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:54,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:04:54,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:55,546 INFO L129 PetriNetUnfolder]: 706/2657 cut-off events. [2022-07-13 22:04:55,546 INFO L130 PetriNetUnfolder]: For 66377/66468 co-relation queries the response was YES. [2022-07-13 22:04:55,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19945 conditions, 2657 events. 706/2657 cut-off events. For 66377/66468 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 21237 event pairs, 282 based on Foata normal form. 46/2632 useless extension candidates. Maximal degree in co-relation 19701. Up to 924 conditions per place. [2022-07-13 22:04:55,595 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 283 selfloop transitions, 136 changer transitions 74/642 dead transitions. [2022-07-13 22:04:55,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 642 transitions, 11487 flow [2022-07-13 22:04:55,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-13 22:04:55,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-13 22:04:55,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6065 transitions. [2022-07-13 22:04:55,598 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7600250626566416 [2022-07-13 22:04:55,599 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6065 transitions. [2022-07-13 22:04:55,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6065 transitions. [2022-07-13 22:04:55,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:55,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6065 transitions. [2022-07-13 22:04:55,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.60526315789474) internal successors, (6065), 38 states have internal predecessors, (6065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:55,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:55,607 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:55,607 INFO L186 Difference]: Start difference. First operand has 606 places, 490 transitions, 7277 flow. Second operand 38 states and 6065 transitions. [2022-07-13 22:04:55,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 642 transitions, 11487 flow [2022-07-13 22:04:55,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 602 places, 642 transitions, 10744 flow, removed 221 selfloop flow, removed 21 redundant places. [2022-07-13 22:04:55,959 INFO L242 Difference]: Finished difference. Result has 625 places, 485 transitions, 6981 flow [2022-07-13 22:04:55,960 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6717, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6981, PETRI_PLACES=625, PETRI_TRANSITIONS=485} [2022-07-13 22:04:55,960 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 438 predicate places. [2022-07-13 22:04:55,960 INFO L495 AbstractCegarLoop]: Abstraction has has 625 places, 485 transitions, 6981 flow [2022-07-13 22:04:55,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:55,960 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:55,960 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:55,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-07-13 22:04:55,961 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:55,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:55,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1194672816, now seen corresponding path program 17 times [2022-07-13 22:04:55,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:55,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344309201] [2022-07-13 22:04:55,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:55,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:56,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:56,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:56,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344309201] [2022-07-13 22:04:56,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344309201] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:56,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:56,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:04:56,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105940937] [2022-07-13 22:04:56,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:56,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:04:56,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:56,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:04:56,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:04:56,059 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:04:56,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 485 transitions, 6981 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:56,060 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:56,060 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:04:56,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:57,070 INFO L129 PetriNetUnfolder]: 670/2518 cut-off events. [2022-07-13 22:04:57,070 INFO L130 PetriNetUnfolder]: For 62137/62228 co-relation queries the response was YES. [2022-07-13 22:04:57,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18844 conditions, 2518 events. 670/2518 cut-off events. For 62137/62228 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 19732 event pairs, 283 based on Foata normal form. 46/2493 useless extension candidates. Maximal degree in co-relation 18593. Up to 914 conditions per place. [2022-07-13 22:04:57,126 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 263 selfloop transitions, 105 changer transitions 67/584 dead transitions. [2022-07-13 22:04:57,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 584 transitions, 9863 flow [2022-07-13 22:04:57,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-13 22:04:57,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-13 22:04:57,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4167 transitions. [2022-07-13 22:04:57,128 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7631868131868131 [2022-07-13 22:04:57,128 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4167 transitions. [2022-07-13 22:04:57,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4167 transitions. [2022-07-13 22:04:57,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:57,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4167 transitions. [2022-07-13 22:04:57,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 160.26923076923077) internal successors, (4167), 26 states have internal predecessors, (4167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:57,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:57,134 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:57,134 INFO L186 Difference]: Start difference. First operand has 625 places, 485 transitions, 6981 flow. Second operand 26 states and 4167 transitions. [2022-07-13 22:04:57,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 584 transitions, 9863 flow [2022-07-13 22:04:57,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 584 transitions, 9579 flow, removed 95 selfloop flow, removed 27 redundant places. [2022-07-13 22:04:57,468 INFO L242 Difference]: Finished difference. Result has 604 places, 437 transitions, 5956 flow [2022-07-13 22:04:57,468 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6795, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5956, PETRI_PLACES=604, PETRI_TRANSITIONS=437} [2022-07-13 22:04:57,469 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 417 predicate places. [2022-07-13 22:04:57,469 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 437 transitions, 5956 flow [2022-07-13 22:04:57,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:57,469 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:57,469 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:57,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-07-13 22:04:57,470 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:57,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:57,470 INFO L85 PathProgramCache]: Analyzing trace with hash 867598196, now seen corresponding path program 18 times [2022-07-13 22:04:57,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:57,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129769830] [2022-07-13 22:04:57,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:57,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:57,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:57,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:57,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129769830] [2022-07-13 22:04:57,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129769830] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:57,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:57,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:04:57,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179712230] [2022-07-13 22:04:57,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:57,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:04:57,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:57,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:04:57,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:04:57,578 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:04:57,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 437 transitions, 5956 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:57,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:57,579 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:04:57,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:58,909 INFO L129 PetriNetUnfolder]: 717/2685 cut-off events. [2022-07-13 22:04:58,909 INFO L130 PetriNetUnfolder]: For 65581/65649 co-relation queries the response was YES. [2022-07-13 22:04:58,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20118 conditions, 2685 events. 717/2685 cut-off events. For 65581/65649 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 21455 event pairs, 308 based on Foata normal form. 27/2645 useless extension candidates. Maximal degree in co-relation 19885. Up to 916 conditions per place. [2022-07-13 22:04:58,969 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 270 selfloop transitions, 121 changer transitions 83/623 dead transitions. [2022-07-13 22:04:58,969 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 623 transitions, 10918 flow [2022-07-13 22:04:58,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-13 22:04:58,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-07-13 22:04:58,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7179 transitions. [2022-07-13 22:04:58,973 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7596825396825397 [2022-07-13 22:04:58,973 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7179 transitions. [2022-07-13 22:04:58,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7179 transitions. [2022-07-13 22:04:58,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:58,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7179 transitions. [2022-07-13 22:04:58,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.53333333333333) internal successors, (7179), 45 states have internal predecessors, (7179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:58,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:58,982 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:58,982 INFO L186 Difference]: Start difference. First operand has 604 places, 437 transitions, 5956 flow. Second operand 45 states and 7179 transitions. [2022-07-13 22:04:58,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 623 transitions, 10918 flow [2022-07-13 22:04:59,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 623 transitions, 9804 flow, removed 78 selfloop flow, removed 31 redundant places. [2022-07-13 22:04:59,320 INFO L242 Difference]: Finished difference. Result has 604 places, 462 transitions, 6079 flow [2022-07-13 22:04:59,320 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5252, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=6079, PETRI_PLACES=604, PETRI_TRANSITIONS=462} [2022-07-13 22:04:59,321 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 417 predicate places. [2022-07-13 22:04:59,321 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 462 transitions, 6079 flow [2022-07-13 22:04:59,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:59,321 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:59,321 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:59,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-07-13 22:04:59,322 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:59,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:59,322 INFO L85 PathProgramCache]: Analyzing trace with hash -439035162, now seen corresponding path program 19 times [2022-07-13 22:04:59,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:59,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318275822] [2022-07-13 22:04:59,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:59,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:59,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:59,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:59,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318275822] [2022-07-13 22:04:59,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318275822] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:59,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:59,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:04:59,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319227025] [2022-07-13 22:04:59,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:59,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:04:59,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:59,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:04:59,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:04:59,431 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:04:59,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 462 transitions, 6079 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:59,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:59,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:04:59,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:00,810 INFO L129 PetriNetUnfolder]: 711/2663 cut-off events. [2022-07-13 22:05:00,810 INFO L130 PetriNetUnfolder]: For 62676/62744 co-relation queries the response was YES. [2022-07-13 22:05:00,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19593 conditions, 2663 events. 711/2663 cut-off events. For 62676/62744 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 21272 event pairs, 301 based on Foata normal form. 27/2622 useless extension candidates. Maximal degree in co-relation 19344. Up to 912 conditions per place. [2022-07-13 22:05:00,864 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 278 selfloop transitions, 119 changer transitions 85/631 dead transitions. [2022-07-13 22:05:00,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 631 transitions, 10776 flow [2022-07-13 22:05:00,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-13 22:05:00,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-07-13 22:05:00,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7339 transitions. [2022-07-13 22:05:00,867 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7597308488612836 [2022-07-13 22:05:00,867 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7339 transitions. [2022-07-13 22:05:00,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7339 transitions. [2022-07-13 22:05:00,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:00,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7339 transitions. [2022-07-13 22:05:00,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.54347826086956) internal successors, (7339), 46 states have internal predecessors, (7339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:00,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:00,876 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:00,876 INFO L186 Difference]: Start difference. First operand has 604 places, 462 transitions, 6079 flow. Second operand 46 states and 7339 transitions. [2022-07-13 22:05:00,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 631 transitions, 10776 flow [2022-07-13 22:05:01,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 631 transitions, 10330 flow, removed 180 selfloop flow, removed 30 redundant places. [2022-07-13 22:05:01,219 INFO L242 Difference]: Finished difference. Result has 620 places, 466 transitions, 6385 flow [2022-07-13 22:05:01,219 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5927, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=6385, PETRI_PLACES=620, PETRI_TRANSITIONS=466} [2022-07-13 22:05:01,221 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 433 predicate places. [2022-07-13 22:05:01,221 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 466 transitions, 6385 flow [2022-07-13 22:05:01,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:01,222 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:01,223 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:01,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-07-13 22:05:01,223 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:01,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:01,224 INFO L85 PathProgramCache]: Analyzing trace with hash -737920398, now seen corresponding path program 20 times [2022-07-13 22:05:01,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:01,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691615845] [2022-07-13 22:05:01,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:01,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:01,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:01,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:01,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691615845] [2022-07-13 22:05:01,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691615845] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:01,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:01,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:01,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810036345] [2022-07-13 22:05:01,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:01,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:01,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:01,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:01,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:01,343 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:01,343 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 466 transitions, 6385 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:01,344 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:01,344 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:01,344 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:02,659 INFO L129 PetriNetUnfolder]: 729/2707 cut-off events. [2022-07-13 22:05:02,659 INFO L130 PetriNetUnfolder]: For 65708/65776 co-relation queries the response was YES. [2022-07-13 22:05:02,699 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20308 conditions, 2707 events. 729/2707 cut-off events. For 65708/65776 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 21620 event pairs, 313 based on Foata normal form. 27/2661 useless extension candidates. Maximal degree in co-relation 20053. Up to 932 conditions per place. [2022-07-13 22:05:02,708 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 270 selfloop transitions, 134 changer transitions 73/626 dead transitions. [2022-07-13 22:05:02,708 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 626 transitions, 10868 flow [2022-07-13 22:05:02,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-13 22:05:02,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-13 22:05:02,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5917 transitions. [2022-07-13 22:05:02,711 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7615186615186615 [2022-07-13 22:05:02,711 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5917 transitions. [2022-07-13 22:05:02,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5917 transitions. [2022-07-13 22:05:02,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:02,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5917 transitions. [2022-07-13 22:05:02,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.9189189189189) internal successors, (5917), 37 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:02,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:02,718 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:02,718 INFO L186 Difference]: Start difference. First operand has 620 places, 466 transitions, 6385 flow. Second operand 37 states and 5917 transitions. [2022-07-13 22:05:02,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 626 transitions, 10868 flow [2022-07-13 22:05:03,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 626 transitions, 10475 flow, removed 138 selfloop flow, removed 30 redundant places. [2022-07-13 22:05:03,073 INFO L242 Difference]: Finished difference. Result has 617 places, 485 transitions, 7007 flow [2022-07-13 22:05:03,073 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6204, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7007, PETRI_PLACES=617, PETRI_TRANSITIONS=485} [2022-07-13 22:05:03,074 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 430 predicate places. [2022-07-13 22:05:03,074 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 485 transitions, 7007 flow [2022-07-13 22:05:03,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:03,074 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:03,074 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:03,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-07-13 22:05:03,074 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:03,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:03,075 INFO L85 PathProgramCache]: Analyzing trace with hash -843381400, now seen corresponding path program 21 times [2022-07-13 22:05:03,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:03,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524114976] [2022-07-13 22:05:03,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:03,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:03,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:03,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:03,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524114976] [2022-07-13 22:05:03,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524114976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:03,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:03,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:03,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822544513] [2022-07-13 22:05:03,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:03,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:03,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:03,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:03,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:03,188 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:03,189 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 485 transitions, 7007 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:03,189 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:03,189 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:03,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:04,454 INFO L129 PetriNetUnfolder]: 722/2701 cut-off events. [2022-07-13 22:05:04,454 INFO L130 PetriNetUnfolder]: For 66760/66830 co-relation queries the response was YES. [2022-07-13 22:05:04,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20368 conditions, 2701 events. 722/2701 cut-off events. For 66760/66830 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 21602 event pairs, 308 based on Foata normal form. 29/2661 useless extension candidates. Maximal degree in co-relation 20117. Up to 928 conditions per place. [2022-07-13 22:05:04,520 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 277 selfloop transitions, 133 changer transitions 72/631 dead transitions. [2022-07-13 22:05:04,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 631 transitions, 11266 flow [2022-07-13 22:05:04,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-13 22:05:04,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-13 22:05:04,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6077 transitions. [2022-07-13 22:05:04,524 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7615288220551378 [2022-07-13 22:05:04,524 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6077 transitions. [2022-07-13 22:05:04,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6077 transitions. [2022-07-13 22:05:04,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:04,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6077 transitions. [2022-07-13 22:05:04,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.92105263157896) internal successors, (6077), 38 states have internal predecessors, (6077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:04,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:04,534 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:04,534 INFO L186 Difference]: Start difference. First operand has 617 places, 485 transitions, 7007 flow. Second operand 38 states and 6077 transitions. [2022-07-13 22:05:04,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 631 transitions, 11266 flow [2022-07-13 22:05:05,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 631 transitions, 10916 flow, removed 119 selfloop flow, removed 21 redundant places. [2022-07-13 22:05:05,061 INFO L242 Difference]: Finished difference. Result has 633 places, 491 transitions, 7360 flow [2022-07-13 22:05:05,061 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6836, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7360, PETRI_PLACES=633, PETRI_TRANSITIONS=491} [2022-07-13 22:05:05,062 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 446 predicate places. [2022-07-13 22:05:05,062 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 491 transitions, 7360 flow [2022-07-13 22:05:05,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:05,062 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:05,062 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:05,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-07-13 22:05:05,063 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:05,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:05,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1580929322, now seen corresponding path program 22 times [2022-07-13 22:05:05,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:05,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740269349] [2022-07-13 22:05:05,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:05,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:05,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:05,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:05,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740269349] [2022-07-13 22:05:05,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740269349] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:05,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:05,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:05,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589902316] [2022-07-13 22:05:05,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:05,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:05,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:05,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:05,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:05,188 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:05,189 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 491 transitions, 7360 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:05,189 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:05,189 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:05,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:06,610 INFO L129 PetriNetUnfolder]: 718/2702 cut-off events. [2022-07-13 22:05:06,610 INFO L130 PetriNetUnfolder]: For 67678/67745 co-relation queries the response was YES. [2022-07-13 22:05:06,664 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20487 conditions, 2702 events. 718/2702 cut-off events. For 67678/67745 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 21602 event pairs, 301 based on Foata normal form. 27/2662 useless extension candidates. Maximal degree in co-relation 20230. Up to 924 conditions per place. [2022-07-13 22:05:06,674 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 284 selfloop transitions, 129 changer transitions 74/636 dead transitions. [2022-07-13 22:05:06,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 636 transitions, 11623 flow [2022-07-13 22:05:06,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-13 22:05:06,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-13 22:05:06,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6077 transitions. [2022-07-13 22:05:06,678 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7615288220551378 [2022-07-13 22:05:06,678 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6077 transitions. [2022-07-13 22:05:06,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6077 transitions. [2022-07-13 22:05:06,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:06,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6077 transitions. [2022-07-13 22:05:06,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.92105263157896) internal successors, (6077), 38 states have internal predecessors, (6077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:06,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:06,686 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:06,686 INFO L186 Difference]: Start difference. First operand has 633 places, 491 transitions, 7360 flow. Second operand 38 states and 6077 transitions. [2022-07-13 22:05:06,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 636 transitions, 11623 flow [2022-07-13 22:05:07,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 626 places, 636 transitions, 11299 flow, removed 113 selfloop flow, removed 20 redundant places. [2022-07-13 22:05:07,101 INFO L242 Difference]: Finished difference. Result has 649 places, 496 transitions, 7657 flow [2022-07-13 22:05:07,102 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7176, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7657, PETRI_PLACES=649, PETRI_TRANSITIONS=496} [2022-07-13 22:05:07,102 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 462 predicate places. [2022-07-13 22:05:07,102 INFO L495 AbstractCegarLoop]: Abstraction has has 649 places, 496 transitions, 7657 flow [2022-07-13 22:05:07,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:07,103 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:07,103 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:07,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-07-13 22:05:07,103 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:07,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:07,103 INFO L85 PathProgramCache]: Analyzing trace with hash 89261698, now seen corresponding path program 23 times [2022-07-13 22:05:07,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:07,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948819942] [2022-07-13 22:05:07,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:07,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:07,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:07,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948819942] [2022-07-13 22:05:07,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948819942] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:07,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:07,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:07,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051370786] [2022-07-13 22:05:07,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:07,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:07,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:07,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:07,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:07,207 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:07,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 649 places, 496 transitions, 7657 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:07,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:07,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:07,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:08,539 INFO L129 PetriNetUnfolder]: 704/2650 cut-off events. [2022-07-13 22:05:08,539 INFO L130 PetriNetUnfolder]: For 68189/68258 co-relation queries the response was YES. [2022-07-13 22:05:08,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20265 conditions, 2650 events. 704/2650 cut-off events. For 68189/68258 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 21077 event pairs, 305 based on Foata normal form. 29/2608 useless extension candidates. Maximal degree in co-relation 20002. Up to 928 conditions per place. [2022-07-13 22:05:08,619 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 278 selfloop transitions, 130 changer transitions 62/619 dead transitions. [2022-07-13 22:05:08,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 654 places, 619 transitions, 11341 flow [2022-07-13 22:05:08,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:05:08,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:05:08,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4815 transitions. [2022-07-13 22:05:08,623 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-07-13 22:05:08,623 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4815 transitions. [2022-07-13 22:05:08,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4815 transitions. [2022-07-13 22:05:08,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:08,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4815 transitions. [2022-07-13 22:05:08,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.5) internal successors, (4815), 30 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:08,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:08,630 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:08,630 INFO L186 Difference]: Start difference. First operand has 649 places, 496 transitions, 7657 flow. Second operand 30 states and 4815 transitions. [2022-07-13 22:05:08,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 654 places, 619 transitions, 11341 flow [2022-07-13 22:05:09,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 633 places, 619 transitions, 11025 flow, removed 109 selfloop flow, removed 21 redundant places. [2022-07-13 22:05:09,046 INFO L242 Difference]: Finished difference. Result has 648 places, 501 transitions, 7910 flow [2022-07-13 22:05:09,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7451, PETRI_DIFFERENCE_MINUEND_PLACES=604, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7910, PETRI_PLACES=648, PETRI_TRANSITIONS=501} [2022-07-13 22:05:09,046 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 461 predicate places. [2022-07-13 22:05:09,046 INFO L495 AbstractCegarLoop]: Abstraction has has 648 places, 501 transitions, 7910 flow [2022-07-13 22:05:09,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:09,047 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:09,047 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:09,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-07-13 22:05:09,047 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:09,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:09,047 INFO L85 PathProgramCache]: Analyzing trace with hash 296426346, now seen corresponding path program 24 times [2022-07-13 22:05:09,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:09,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774102832] [2022-07-13 22:05:09,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:09,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:09,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:09,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:09,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774102832] [2022-07-13 22:05:09,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774102832] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:09,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:09,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:09,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758318895] [2022-07-13 22:05:09,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:09,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:09,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:09,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:09,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:09,158 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:09,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 501 transitions, 7910 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:09,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:09,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:09,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:10,328 INFO L129 PetriNetUnfolder]: 712/2675 cut-off events. [2022-07-13 22:05:10,328 INFO L130 PetriNetUnfolder]: For 69909/69992 co-relation queries the response was YES. [2022-07-13 22:05:10,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20611 conditions, 2675 events. 712/2675 cut-off events. For 69909/69992 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 21364 event pairs, 304 based on Foata normal form. 35/2641 useless extension candidates. Maximal degree in co-relation 20351. Up to 934 conditions per place. [2022-07-13 22:05:10,391 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 276 selfloop transitions, 144 changer transitions 63/632 dead transitions. [2022-07-13 22:05:10,391 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 632 transitions, 11882 flow [2022-07-13 22:05:10,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 22:05:10,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-13 22:05:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4655 transitions. [2022-07-13 22:05:10,394 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-07-13 22:05:10,394 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4655 transitions. [2022-07-13 22:05:10,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4655 transitions. [2022-07-13 22:05:10,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:10,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4655 transitions. [2022-07-13 22:05:10,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.51724137931035) internal successors, (4655), 29 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:10,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:10,400 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:10,400 INFO L186 Difference]: Start difference. First operand has 648 places, 501 transitions, 7910 flow. Second operand 29 states and 4655 transitions. [2022-07-13 22:05:10,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 632 transitions, 11882 flow [2022-07-13 22:05:10,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 647 places, 632 transitions, 11594 flow, removed 87 selfloop flow, removed 14 redundant places. [2022-07-13 22:05:10,879 INFO L242 Difference]: Finished difference. Result has 661 places, 513 transitions, 8415 flow [2022-07-13 22:05:10,879 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7706, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8415, PETRI_PLACES=661, PETRI_TRANSITIONS=513} [2022-07-13 22:05:10,880 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 474 predicate places. [2022-07-13 22:05:10,880 INFO L495 AbstractCegarLoop]: Abstraction has has 661 places, 513 transitions, 8415 flow [2022-07-13 22:05:10,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:10,880 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:10,880 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:10,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-07-13 22:05:10,881 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:10,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:10,881 INFO L85 PathProgramCache]: Analyzing trace with hash 676698352, now seen corresponding path program 25 times [2022-07-13 22:05:10,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:10,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139598881] [2022-07-13 22:05:10,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:10,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:10,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:10,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:10,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139598881] [2022-07-13 22:05:10,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139598881] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:10,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:10,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:10,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790368738] [2022-07-13 22:05:10,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:10,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:10,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:10,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:10,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:10,995 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:10,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 661 places, 513 transitions, 8415 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:10,996 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:10,996 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:10,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:12,202 INFO L129 PetriNetUnfolder]: 712/2675 cut-off events. [2022-07-13 22:05:12,203 INFO L130 PetriNetUnfolder]: For 70421/70488 co-relation queries the response was YES. [2022-07-13 22:05:12,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20789 conditions, 2675 events. 712/2675 cut-off events. For 70421/70488 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 21348 event pairs, 304 based on Foata normal form. 27/2632 useless extension candidates. Maximal degree in co-relation 20525. Up to 937 conditions per place. [2022-07-13 22:05:12,275 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 283 selfloop transitions, 144 changer transitions 61/637 dead transitions. [2022-07-13 22:05:12,275 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 675 places, 637 transitions, 12292 flow [2022-07-13 22:05:12,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 22:05:12,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-13 22:05:12,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4655 transitions. [2022-07-13 22:05:12,277 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-07-13 22:05:12,277 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4655 transitions. [2022-07-13 22:05:12,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4655 transitions. [2022-07-13 22:05:12,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:12,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4655 transitions. [2022-07-13 22:05:12,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.51724137931035) internal successors, (4655), 29 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:12,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:12,284 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:12,284 INFO L186 Difference]: Start difference. First operand has 661 places, 513 transitions, 8415 flow. Second operand 29 states and 4655 transitions. [2022-07-13 22:05:12,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 675 places, 637 transitions, 12292 flow [2022-07-13 22:05:12,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 637 transitions, 11989 flow, removed 71 selfloop flow, removed 13 redundant places. [2022-07-13 22:05:12,744 INFO L242 Difference]: Finished difference. Result has 676 places, 525 transitions, 8946 flow [2022-07-13 22:05:12,744 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8193, PETRI_DIFFERENCE_MINUEND_PLACES=634, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8946, PETRI_PLACES=676, PETRI_TRANSITIONS=525} [2022-07-13 22:05:12,744 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 489 predicate places. [2022-07-13 22:05:12,745 INFO L495 AbstractCegarLoop]: Abstraction has has 676 places, 525 transitions, 8946 flow [2022-07-13 22:05:12,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:12,745 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:12,745 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:12,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-07-13 22:05:12,745 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:12,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:12,745 INFO L85 PathProgramCache]: Analyzing trace with hash -704180468, now seen corresponding path program 26 times [2022-07-13 22:05:12,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:12,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882688868] [2022-07-13 22:05:12,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:12,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:12,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:12,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:12,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882688868] [2022-07-13 22:05:12,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882688868] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:12,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:12,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:12,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843323425] [2022-07-13 22:05:12,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:12,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:12,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:12,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:12,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:12,844 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:12,844 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 676 places, 525 transitions, 8946 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:12,844 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:12,844 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:12,845 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:13,999 INFO L129 PetriNetUnfolder]: 696/2642 cut-off events. [2022-07-13 22:05:13,999 INFO L130 PetriNetUnfolder]: For 68838/68906 co-relation queries the response was YES. [2022-07-13 22:05:14,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20396 conditions, 2642 events. 696/2642 cut-off events. For 68838/68906 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 21046 event pairs, 306 based on Foata normal form. 27/2601 useless extension candidates. Maximal degree in co-relation 20126. Up to 930 conditions per place. [2022-07-13 22:05:14,057 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 282 selfloop transitions, 125 changer transitions 66/622 dead transitions. [2022-07-13 22:05:14,057 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 691 places, 622 transitions, 11884 flow [2022-07-13 22:05:14,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:05:14,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:05:14,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4806 transitions. [2022-07-13 22:05:14,060 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7628571428571429 [2022-07-13 22:05:14,060 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4806 transitions. [2022-07-13 22:05:14,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4806 transitions. [2022-07-13 22:05:14,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:14,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4806 transitions. [2022-07-13 22:05:14,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.2) internal successors, (4806), 30 states have internal predecessors, (4806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:14,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:14,066 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:14,066 INFO L186 Difference]: Start difference. First operand has 676 places, 525 transitions, 8946 flow. Second operand 30 states and 4806 transitions. [2022-07-13 22:05:14,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 691 places, 622 transitions, 11884 flow [2022-07-13 22:05:14,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 622 transitions, 11504 flow, removed 74 selfloop flow, removed 12 redundant places. [2022-07-13 22:05:14,531 INFO L242 Difference]: Finished difference. Result has 690 places, 505 transitions, 8281 flow [2022-07-13 22:05:14,532 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8592, PETRI_DIFFERENCE_MINUEND_PLACES=650, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8281, PETRI_PLACES=690, PETRI_TRANSITIONS=505} [2022-07-13 22:05:14,532 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 503 predicate places. [2022-07-13 22:05:14,532 INFO L495 AbstractCegarLoop]: Abstraction has has 690 places, 505 transitions, 8281 flow [2022-07-13 22:05:14,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:14,532 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:14,533 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:14,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-07-13 22:05:14,533 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:14,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:14,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1654180704, now seen corresponding path program 27 times [2022-07-13 22:05:14,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:14,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398026222] [2022-07-13 22:05:14,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:14,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:14,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:14,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:14,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398026222] [2022-07-13 22:05:14,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398026222] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:14,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:14,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:14,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015534546] [2022-07-13 22:05:14,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:14,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:14,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:14,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:14,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:14,642 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:14,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 690 places, 505 transitions, 8281 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:14,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:14,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:14,642 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:15,765 INFO L129 PetriNetUnfolder]: 688/2618 cut-off events. [2022-07-13 22:05:15,765 INFO L130 PetriNetUnfolder]: For 69500/69583 co-relation queries the response was YES. [2022-07-13 22:05:15,917 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20209 conditions, 2618 events. 688/2618 cut-off events. For 69500/69583 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 20787 event pairs, 304 based on Foata normal form. 35/2584 useless extension candidates. Maximal degree in co-relation 19936. Up to 924 conditions per place. [2022-07-13 22:05:15,925 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 285 selfloop transitions, 125 changer transitions 64/623 dead transitions. [2022-07-13 22:05:15,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 692 places, 623 transitions, 11927 flow [2022-07-13 22:05:15,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:05:15,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:05:15,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4815 transitions. [2022-07-13 22:05:15,928 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-07-13 22:05:15,928 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4815 transitions. [2022-07-13 22:05:15,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4815 transitions. [2022-07-13 22:05:15,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:15,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4815 transitions. [2022-07-13 22:05:15,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.5) internal successors, (4815), 30 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:15,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:15,934 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:15,934 INFO L186 Difference]: Start difference. First operand has 690 places, 505 transitions, 8281 flow. Second operand 30 states and 4815 transitions. [2022-07-13 22:05:15,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 692 places, 623 transitions, 11927 flow [2022-07-13 22:05:16,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 660 places, 623 transitions, 11379 flow, removed 69 selfloop flow, removed 32 redundant places. [2022-07-13 22:05:16,365 INFO L242 Difference]: Finished difference. Result has 671 places, 507 transitions, 8220 flow [2022-07-13 22:05:16,366 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7878, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8220, PETRI_PLACES=671, PETRI_TRANSITIONS=507} [2022-07-13 22:05:16,366 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 484 predicate places. [2022-07-13 22:05:16,366 INFO L495 AbstractCegarLoop]: Abstraction has has 671 places, 507 transitions, 8220 flow [2022-07-13 22:05:16,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:16,366 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:16,366 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:16,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-07-13 22:05:16,367 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:16,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:16,367 INFO L85 PathProgramCache]: Analyzing trace with hash -414257954, now seen corresponding path program 28 times [2022-07-13 22:05:16,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:16,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985887895] [2022-07-13 22:05:16,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:16,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:16,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:16,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:16,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985887895] [2022-07-13 22:05:16,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985887895] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:16,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:16,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:16,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338752030] [2022-07-13 22:05:16,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:16,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:16,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:16,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:16,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:16,479 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:16,480 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 671 places, 507 transitions, 8220 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:16,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:16,480 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:16,480 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:17,563 INFO L129 PetriNetUnfolder]: 670/2551 cut-off events. [2022-07-13 22:05:17,563 INFO L130 PetriNetUnfolder]: For 64866/64947 co-relation queries the response was YES. [2022-07-13 22:05:17,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19431 conditions, 2551 events. 670/2551 cut-off events. For 64866/64947 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 20046 event pairs, 300 based on Foata normal form. 33/2516 useless extension candidates. Maximal degree in co-relation 19166. Up to 916 conditions per place. [2022-07-13 22:05:17,622 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 279 selfloop transitions, 105 changer transitions 64/597 dead transitions. [2022-07-13 22:05:17,622 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 683 places, 597 transitions, 10969 flow [2022-07-13 22:05:17,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-13 22:05:17,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-13 22:05:17,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4490 transitions. [2022-07-13 22:05:17,625 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7636054421768708 [2022-07-13 22:05:17,625 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4490 transitions. [2022-07-13 22:05:17,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4490 transitions. [2022-07-13 22:05:17,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:17,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4490 transitions. [2022-07-13 22:05:17,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.35714285714286) internal successors, (4490), 28 states have internal predecessors, (4490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:17,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:17,630 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:17,630 INFO L186 Difference]: Start difference. First operand has 671 places, 507 transitions, 8220 flow. Second operand 28 states and 4490 transitions. [2022-07-13 22:05:17,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 683 places, 597 transitions, 10969 flow [2022-07-13 22:05:18,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 669 places, 597 transitions, 10713 flow, removed 75 selfloop flow, removed 14 redundant places. [2022-07-13 22:05:18,082 INFO L242 Difference]: Finished difference. Result has 678 places, 482 transitions, 7586 flow [2022-07-13 22:05:18,082 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8003, PETRI_DIFFERENCE_MINUEND_PLACES=642, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7586, PETRI_PLACES=678, PETRI_TRANSITIONS=482} [2022-07-13 22:05:18,082 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 491 predicate places. [2022-07-13 22:05:18,082 INFO L495 AbstractCegarLoop]: Abstraction has has 678 places, 482 transitions, 7586 flow [2022-07-13 22:05:18,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:18,083 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:18,083 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:18,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-07-13 22:05:18,083 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:18,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:18,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1984213508, now seen corresponding path program 29 times [2022-07-13 22:05:18,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:18,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777715388] [2022-07-13 22:05:18,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:18,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:18,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:18,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777715388] [2022-07-13 22:05:18,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777715388] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:18,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:18,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:18,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068579679] [2022-07-13 22:05:18,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:18,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:18,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:18,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:18,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:18,204 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:18,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 678 places, 482 transitions, 7586 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:18,205 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:18,205 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:18,205 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:19,434 INFO L129 PetriNetUnfolder]: 648/2473 cut-off events. [2022-07-13 22:05:19,434 INFO L130 PetriNetUnfolder]: For 62836/62903 co-relation queries the response was YES. [2022-07-13 22:05:19,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18733 conditions, 2473 events. 648/2473 cut-off events. For 62836/62903 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 19242 event pairs, 298 based on Foata normal form. 27/2432 useless extension candidates. Maximal degree in co-relation 18469. Up to 904 conditions per place. [2022-07-13 22:05:19,503 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 89 changer transitions 66/561 dead transitions. [2022-07-13 22:05:19,504 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 671 places, 561 transitions, 9992 flow [2022-07-13 22:05:19,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-13 22:05:19,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-13 22:05:19,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4330 transitions. [2022-07-13 22:05:19,507 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.763668430335097 [2022-07-13 22:05:19,507 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4330 transitions. [2022-07-13 22:05:19,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4330 transitions. [2022-07-13 22:05:19,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:19,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4330 transitions. [2022-07-13 22:05:19,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.37037037037038) internal successors, (4330), 27 states have internal predecessors, (4330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:19,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:19,513 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:19,513 INFO L186 Difference]: Start difference. First operand has 678 places, 482 transitions, 7586 flow. Second operand 27 states and 4330 transitions. [2022-07-13 22:05:19,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 671 places, 561 transitions, 9992 flow [2022-07-13 22:05:19,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 561 transitions, 9375 flow, removed 37 selfloop flow, removed 34 redundant places. [2022-07-13 22:05:20,004 INFO L242 Difference]: Finished difference. Result has 644 places, 445 transitions, 6361 flow [2022-07-13 22:05:20,004 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7041, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=6361, PETRI_PLACES=644, PETRI_TRANSITIONS=445} [2022-07-13 22:05:20,005 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 457 predicate places. [2022-07-13 22:05:20,005 INFO L495 AbstractCegarLoop]: Abstraction has has 644 places, 445 transitions, 6361 flow [2022-07-13 22:05:20,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:20,005 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:20,005 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:20,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-07-13 22:05:20,005 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:20,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:20,006 INFO L85 PathProgramCache]: Analyzing trace with hash 624038396, now seen corresponding path program 30 times [2022-07-13 22:05:20,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:20,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069942597] [2022-07-13 22:05:20,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:20,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:20,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:20,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:20,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069942597] [2022-07-13 22:05:20,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069942597] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:20,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:20,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:20,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118980281] [2022-07-13 22:05:20,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:20,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:20,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:20,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:20,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:20,127 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:20,128 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 445 transitions, 6361 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:20,128 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:20,128 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:20,128 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:21,220 INFO L129 PetriNetUnfolder]: 620/2367 cut-off events. [2022-07-13 22:05:21,220 INFO L130 PetriNetUnfolder]: For 56583/56653 co-relation queries the response was YES. [2022-07-13 22:05:21,277 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17489 conditions, 2367 events. 620/2367 cut-off events. For 56583/56653 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 18081 event pairs, 294 based on Foata normal form. 29/2331 useless extension candidates. Maximal degree in co-relation 17237. Up to 886 conditions per place. [2022-07-13 22:05:21,287 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 227 selfloop transitions, 67 changer transitions 68/511 dead transitions. [2022-07-13 22:05:21,288 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 511 transitions, 8308 flow [2022-07-13 22:05:21,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:05:21,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:05:21,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4783 transitions. [2022-07-13 22:05:21,291 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7592063492063492 [2022-07-13 22:05:21,291 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4783 transitions. [2022-07-13 22:05:21,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4783 transitions. [2022-07-13 22:05:21,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:21,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4783 transitions. [2022-07-13 22:05:21,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.43333333333334) internal successors, (4783), 30 states have internal predecessors, (4783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:21,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:21,299 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:21,299 INFO L186 Difference]: Start difference. First operand has 644 places, 445 transitions, 6361 flow. Second operand 30 states and 4783 transitions. [2022-07-13 22:05:21,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 511 transitions, 8308 flow [2022-07-13 22:05:21,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 511 transitions, 7673 flow, removed 36 selfloop flow, removed 38 redundant places. [2022-07-13 22:05:21,693 INFO L242 Difference]: Finished difference. Result has 600 places, 394 transitions, 4823 flow [2022-07-13 22:05:21,694 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5771, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4823, PETRI_PLACES=600, PETRI_TRANSITIONS=394} [2022-07-13 22:05:21,694 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 413 predicate places. [2022-07-13 22:05:21,694 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 394 transitions, 4823 flow [2022-07-13 22:05:21,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:21,694 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:21,695 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:21,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-07-13 22:05:21,695 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:21,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:21,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1193091862, now seen corresponding path program 31 times [2022-07-13 22:05:21,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:21,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895171643] [2022-07-13 22:05:21,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:21,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:21,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:21,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:21,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895171643] [2022-07-13 22:05:21,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895171643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:21,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:21,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:21,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332971603] [2022-07-13 22:05:21,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:21,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:21,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:21,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:21,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:21,808 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:21,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 394 transitions, 4823 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:21,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:21,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:21,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:23,068 INFO L129 PetriNetUnfolder]: 643/2444 cut-off events. [2022-07-13 22:05:23,068 INFO L130 PetriNetUnfolder]: For 56001/56051 co-relation queries the response was YES. [2022-07-13 22:05:23,113 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17725 conditions, 2444 events. 643/2444 cut-off events. For 56001/56051 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 18806 event pairs, 306 based on Foata normal form. 13/2390 useless extension candidates. Maximal degree in co-relation 17489. Up to 886 conditions per place. [2022-07-13 22:05:23,122 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 233 selfloop transitions, 92 changer transitions 68/542 dead transitions. [2022-07-13 22:05:23,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 542 transitions, 8895 flow [2022-07-13 22:05:23,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-13 22:05:23,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-13 22:05:23,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6072 transitions. [2022-07-13 22:05:23,125 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7609022556390977 [2022-07-13 22:05:23,125 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6072 transitions. [2022-07-13 22:05:23,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6072 transitions. [2022-07-13 22:05:23,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:23,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6072 transitions. [2022-07-13 22:05:23,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.78947368421052) internal successors, (6072), 38 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:23,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:23,134 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:23,134 INFO L186 Difference]: Start difference. First operand has 600 places, 394 transitions, 4823 flow. Second operand 38 states and 6072 transitions. [2022-07-13 22:05:23,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 542 transitions, 8895 flow [2022-07-13 22:05:23,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 542 transitions, 8008 flow, removed 66 selfloop flow, removed 39 redundant places. [2022-07-13 22:05:23,401 INFO L242 Difference]: Finished difference. Result has 561 places, 414 transitions, 5038 flow [2022-07-13 22:05:23,402 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4245, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5038, PETRI_PLACES=561, PETRI_TRANSITIONS=414} [2022-07-13 22:05:23,402 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 374 predicate places. [2022-07-13 22:05:23,402 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 414 transitions, 5038 flow [2022-07-13 22:05:23,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:23,403 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:23,403 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:23,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-07-13 22:05:23,403 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:23,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:23,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1145726642, now seen corresponding path program 32 times [2022-07-13 22:05:23,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:23,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596559138] [2022-07-13 22:05:23,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:23,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:23,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:23,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:23,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596559138] [2022-07-13 22:05:23,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596559138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:23,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:23,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:23,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489349010] [2022-07-13 22:05:23,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:23,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:23,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:23,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:23,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:23,524 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:23,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 414 transitions, 5038 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:23,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:23,525 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:23,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:24,710 INFO L129 PetriNetUnfolder]: 642/2463 cut-off events. [2022-07-13 22:05:24,710 INFO L130 PetriNetUnfolder]: For 52804/52864 co-relation queries the response was YES. [2022-07-13 22:05:24,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17386 conditions, 2463 events. 642/2463 cut-off events. For 52804/52864 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 19159 event pairs, 317 based on Foata normal form. 17/2414 useless extension candidates. Maximal degree in co-relation 17154. Up to 886 conditions per place. [2022-07-13 22:05:24,760 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 236 selfloop transitions, 95 changer transitions 67/547 dead transitions. [2022-07-13 22:05:24,760 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 547 transitions, 8737 flow [2022-07-13 22:05:24,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 22:05:24,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-13 22:05:24,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5604 transitions. [2022-07-13 22:05:24,763 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7624489795918368 [2022-07-13 22:05:24,763 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5604 transitions. [2022-07-13 22:05:24,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5604 transitions. [2022-07-13 22:05:24,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:24,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5604 transitions. [2022-07-13 22:05:24,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.11428571428573) internal successors, (5604), 35 states have internal predecessors, (5604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:24,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:24,771 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:24,771 INFO L186 Difference]: Start difference. First operand has 561 places, 414 transitions, 5038 flow. Second operand 35 states and 5604 transitions. [2022-07-13 22:05:24,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 547 transitions, 8737 flow [2022-07-13 22:05:25,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 547 transitions, 8417 flow, removed 111 selfloop flow, removed 17 redundant places. [2022-07-13 22:05:25,048 INFO L242 Difference]: Finished difference. Result has 579 places, 433 transitions, 5684 flow [2022-07-13 22:05:25,049 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4825, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5684, PETRI_PLACES=579, PETRI_TRANSITIONS=433} [2022-07-13 22:05:25,049 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 392 predicate places. [2022-07-13 22:05:25,049 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 433 transitions, 5684 flow [2022-07-13 22:05:25,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:25,049 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:25,050 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:25,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-07-13 22:05:25,050 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:25,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:25,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1025257446, now seen corresponding path program 33 times [2022-07-13 22:05:25,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:25,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236621088] [2022-07-13 22:05:25,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:25,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:25,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:25,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236621088] [2022-07-13 22:05:25,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236621088] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:25,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:25,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:25,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229486827] [2022-07-13 22:05:25,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:25,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:25,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:25,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:25,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:25,151 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:25,152 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 433 transitions, 5684 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:25,152 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:25,152 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:25,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:26,418 INFO L129 PetriNetUnfolder]: 666/2538 cut-off events. [2022-07-13 22:05:26,418 INFO L130 PetriNetUnfolder]: For 58296/58350 co-relation queries the response was YES. [2022-07-13 22:05:26,462 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18400 conditions, 2538 events. 666/2538 cut-off events. For 58296/58350 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 19938 event pairs, 307 based on Foata normal form. 17/2488 useless extension candidates. Maximal degree in co-relation 18158. Up to 886 conditions per place. [2022-07-13 22:05:26,470 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 249 selfloop transitions, 107 changer transitions 68/573 dead transitions. [2022-07-13 22:05:26,470 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 573 transitions, 9700 flow [2022-07-13 22:05:26,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-13 22:05:26,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-13 22:05:26,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5918 transitions. [2022-07-13 22:05:26,473 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7616473616473617 [2022-07-13 22:05:26,473 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5918 transitions. [2022-07-13 22:05:26,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5918 transitions. [2022-07-13 22:05:26,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:26,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5918 transitions. [2022-07-13 22:05:26,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.94594594594594) internal successors, (5918), 37 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:26,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:26,481 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:26,481 INFO L186 Difference]: Start difference. First operand has 579 places, 433 transitions, 5684 flow. Second operand 37 states and 5918 transitions. [2022-07-13 22:05:26,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 573 transitions, 9700 flow [2022-07-13 22:05:26,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 573 transitions, 9249 flow, removed 152 selfloop flow, removed 17 redundant places. [2022-07-13 22:05:26,794 INFO L242 Difference]: Finished difference. Result has 602 places, 453 transitions, 6290 flow [2022-07-13 22:05:26,795 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5360, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=6290, PETRI_PLACES=602, PETRI_TRANSITIONS=453} [2022-07-13 22:05:26,795 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 415 predicate places. [2022-07-13 22:05:26,795 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 453 transitions, 6290 flow [2022-07-13 22:05:26,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:26,795 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:26,796 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:26,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-07-13 22:05:26,796 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:26,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:26,796 INFO L85 PathProgramCache]: Analyzing trace with hash 127385278, now seen corresponding path program 34 times [2022-07-13 22:05:26,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:26,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607120693] [2022-07-13 22:05:26,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:26,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:26,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:26,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:26,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607120693] [2022-07-13 22:05:26,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607120693] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:26,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:26,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:26,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450183451] [2022-07-13 22:05:26,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:26,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:26,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:26,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:26,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:26,915 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:26,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 453 transitions, 6290 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:26,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:26,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:26,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:28,098 INFO L129 PetriNetUnfolder]: 661/2547 cut-off events. [2022-07-13 22:05:28,098 INFO L130 PetriNetUnfolder]: For 59172/59222 co-relation queries the response was YES. [2022-07-13 22:05:28,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18516 conditions, 2547 events. 661/2547 cut-off events. For 59172/59222 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 20058 event pairs, 315 based on Foata normal form. 16/2497 useless extension candidates. Maximal degree in co-relation 18263. Up to 886 conditions per place. [2022-07-13 22:05:28,154 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 245 selfloop transitions, 108 changer transitions 70/572 dead transitions. [2022-07-13 22:05:28,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 572 transitions, 9912 flow [2022-07-13 22:05:28,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-13 22:05:28,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-13 22:05:28,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5763 transitions. [2022-07-13 22:05:28,157 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7623015873015873 [2022-07-13 22:05:28,157 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5763 transitions. [2022-07-13 22:05:28,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5763 transitions. [2022-07-13 22:05:28,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:28,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5763 transitions. [2022-07-13 22:05:28,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.08333333333334) internal successors, (5763), 36 states have internal predecessors, (5763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:28,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:28,165 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:28,165 INFO L186 Difference]: Start difference. First operand has 602 places, 453 transitions, 6290 flow. Second operand 36 states and 5763 transitions. [2022-07-13 22:05:28,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 572 transitions, 9912 flow [2022-07-13 22:05:28,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 572 transitions, 9420 flow, removed 197 selfloop flow, removed 18 redundant places. [2022-07-13 22:05:28,519 INFO L242 Difference]: Finished difference. Result has 619 places, 458 transitions, 6482 flow [2022-07-13 22:05:28,519 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5997, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=6482, PETRI_PLACES=619, PETRI_TRANSITIONS=458} [2022-07-13 22:05:28,519 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 432 predicate places. [2022-07-13 22:05:28,519 INFO L495 AbstractCegarLoop]: Abstraction has has 619 places, 458 transitions, 6482 flow [2022-07-13 22:05:28,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:28,520 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:28,520 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:28,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-07-13 22:05:28,520 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:28,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:28,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1886489240, now seen corresponding path program 35 times [2022-07-13 22:05:28,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:28,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549598188] [2022-07-13 22:05:28,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:28,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:28,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:28,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:28,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549598188] [2022-07-13 22:05:28,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549598188] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:28,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:28,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:28,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888344225] [2022-07-13 22:05:28,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:28,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:28,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:28,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:28,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:28,628 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:28,629 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 458 transitions, 6482 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:28,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:28,629 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:28,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:30,161 INFO L129 PetriNetUnfolder]: 703/2690 cut-off events. [2022-07-13 22:05:30,161 INFO L130 PetriNetUnfolder]: For 62581/62627 co-relation queries the response was YES. [2022-07-13 22:05:30,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19560 conditions, 2690 events. 703/2690 cut-off events. For 62581/62627 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 21576 event pairs, 313 based on Foata normal form. 12/2636 useless extension candidates. Maximal degree in co-relation 19300. Up to 888 conditions per place. [2022-07-13 22:05:30,212 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 274 selfloop transitions, 124 changer transitions 85/632 dead transitions. [2022-07-13 22:05:30,212 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 642 places, 632 transitions, 11213 flow [2022-07-13 22:05:30,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-13 22:05:30,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-07-13 22:05:30,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7340 transitions. [2022-07-13 22:05:30,216 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7598343685300207 [2022-07-13 22:05:30,216 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7340 transitions. [2022-07-13 22:05:30,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7340 transitions. [2022-07-13 22:05:30,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:30,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7340 transitions. [2022-07-13 22:05:30,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.56521739130434) internal successors, (7340), 46 states have internal predecessors, (7340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:30,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:30,225 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:30,225 INFO L186 Difference]: Start difference. First operand has 619 places, 458 transitions, 6482 flow. Second operand 46 states and 7340 transitions. [2022-07-13 22:05:30,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 642 places, 632 transitions, 11213 flow [2022-07-13 22:05:30,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 619 places, 632 transitions, 10599 flow, removed 129 selfloop flow, removed 23 redundant places. [2022-07-13 22:05:30,591 INFO L242 Difference]: Finished difference. Result has 653 places, 483 transitions, 6911 flow [2022-07-13 22:05:30,591 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6054, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=6911, PETRI_PLACES=653, PETRI_TRANSITIONS=483} [2022-07-13 22:05:30,592 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 466 predicate places. [2022-07-13 22:05:30,592 INFO L495 AbstractCegarLoop]: Abstraction has has 653 places, 483 transitions, 6911 flow [2022-07-13 22:05:30,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:30,592 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:30,592 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:30,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-07-13 22:05:30,592 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:30,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:30,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1168325792, now seen corresponding path program 36 times [2022-07-13 22:05:30,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:30,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652411226] [2022-07-13 22:05:30,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:30,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:30,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:30,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:30,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652411226] [2022-07-13 22:05:30,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652411226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:30,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:30,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:30,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096759023] [2022-07-13 22:05:30,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:30,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:30,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:30,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:30,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:30,725 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:30,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 653 places, 483 transitions, 6911 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:30,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:30,726 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:30,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:32,237 INFO L129 PetriNetUnfolder]: 698/2668 cut-off events. [2022-07-13 22:05:32,237 INFO L130 PetriNetUnfolder]: For 62119/62169 co-relation queries the response was YES. [2022-07-13 22:05:32,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19519 conditions, 2668 events. 698/2668 cut-off events. For 62119/62169 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 21296 event pairs, 316 based on Foata normal form. 16/2622 useless extension candidates. Maximal degree in co-relation 19245. Up to 884 conditions per place. [2022-07-13 22:05:32,318 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 266 selfloop transitions, 122 changer transitions 83/620 dead transitions. [2022-07-13 22:05:32,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 620 transitions, 10929 flow [2022-07-13 22:05:32,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-13 22:05:32,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-07-13 22:05:32,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7186 transitions. [2022-07-13 22:05:32,322 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7604232804232804 [2022-07-13 22:05:32,322 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7186 transitions. [2022-07-13 22:05:32,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7186 transitions. [2022-07-13 22:05:32,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:32,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7186 transitions. [2022-07-13 22:05:32,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.6888888888889) internal successors, (7186), 45 states have internal predecessors, (7186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:32,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:32,334 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:32,334 INFO L186 Difference]: Start difference. First operand has 653 places, 483 transitions, 6911 flow. Second operand 45 states and 7186 transitions. [2022-07-13 22:05:32,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 620 transitions, 10929 flow [2022-07-13 22:05:32,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 632 places, 620 transitions, 10546 flow, removed 158 selfloop flow, removed 32 redundant places. [2022-07-13 22:05:32,787 INFO L242 Difference]: Finished difference. Result has 665 places, 486 transitions, 7208 flow [2022-07-13 22:05:32,787 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6751, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=7208, PETRI_PLACES=665, PETRI_TRANSITIONS=486} [2022-07-13 22:05:32,787 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 478 predicate places. [2022-07-13 22:05:32,788 INFO L495 AbstractCegarLoop]: Abstraction has has 665 places, 486 transitions, 7208 flow [2022-07-13 22:05:32,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:32,788 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:32,788 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:32,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-07-13 22:05:32,788 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:32,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:32,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1741599682, now seen corresponding path program 37 times [2022-07-13 22:05:32,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:32,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831628403] [2022-07-13 22:05:32,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:32,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:32,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:32,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:32,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831628403] [2022-07-13 22:05:32,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831628403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:32,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:32,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:32,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284034162] [2022-07-13 22:05:32,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:32,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:32,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:32,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:32,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:32,900 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:32,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 665 places, 486 transitions, 7208 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:32,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:32,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:32,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:34,273 INFO L129 PetriNetUnfolder]: 698/2663 cut-off events. [2022-07-13 22:05:34,273 INFO L130 PetriNetUnfolder]: For 63861/63917 co-relation queries the response was YES. [2022-07-13 22:05:34,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19649 conditions, 2663 events. 698/2663 cut-off events. For 63861/63917 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 21252 event pairs, 323 based on Foata normal form. 16/2612 useless extension candidates. Maximal degree in co-relation 19372. Up to 904 conditions per place. [2022-07-13 22:05:34,330 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 269 selfloop transitions, 129 changer transitions 79/626 dead transitions. [2022-07-13 22:05:34,330 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 626 transitions, 11234 flow [2022-07-13 22:05:34,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-13 22:05:34,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-13 22:05:34,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5763 transitions. [2022-07-13 22:05:34,332 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7623015873015873 [2022-07-13 22:05:34,333 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5763 transitions. [2022-07-13 22:05:34,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5763 transitions. [2022-07-13 22:05:34,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:34,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5763 transitions. [2022-07-13 22:05:34,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.08333333333334) internal successors, (5763), 36 states have internal predecessors, (5763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:34,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:34,340 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:34,340 INFO L186 Difference]: Start difference. First operand has 665 places, 486 transitions, 7208 flow. Second operand 36 states and 5763 transitions. [2022-07-13 22:05:34,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 626 transitions, 11234 flow [2022-07-13 22:05:34,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 626 transitions, 10836 flow, removed 109 selfloop flow, removed 34 redundant places. [2022-07-13 22:05:34,759 INFO L242 Difference]: Finished difference. Result has 657 places, 502 transitions, 7656 flow [2022-07-13 22:05:34,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6948, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=7656, PETRI_PLACES=657, PETRI_TRANSITIONS=502} [2022-07-13 22:05:34,760 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 470 predicate places. [2022-07-13 22:05:34,760 INFO L495 AbstractCegarLoop]: Abstraction has has 657 places, 502 transitions, 7656 flow [2022-07-13 22:05:34,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:34,760 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:34,760 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:34,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-07-13 22:05:34,760 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:34,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:34,761 INFO L85 PathProgramCache]: Analyzing trace with hash -376492098, now seen corresponding path program 38 times [2022-07-13 22:05:34,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:34,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113512560] [2022-07-13 22:05:34,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:34,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:34,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:34,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:34,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113512560] [2022-07-13 22:05:34,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113512560] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:34,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:34,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:34,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979920727] [2022-07-13 22:05:34,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:34,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:34,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:34,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:34,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:34,898 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:34,899 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 502 transitions, 7656 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:34,899 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:34,899 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:34,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:36,324 INFO L129 PetriNetUnfolder]: 721/2742 cut-off events. [2022-07-13 22:05:36,324 INFO L130 PetriNetUnfolder]: For 66004/66060 co-relation queries the response was YES. [2022-07-13 22:05:36,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20501 conditions, 2742 events. 721/2742 cut-off events. For 66004/66060 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 22128 event pairs, 332 based on Foata normal form. 16/2689 useless extension candidates. Maximal degree in co-relation 20231. Up to 916 conditions per place. [2022-07-13 22:05:36,425 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 275 selfloop transitions, 141 changer transitions 70/635 dead transitions. [2022-07-13 22:05:36,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 635 transitions, 11615 flow [2022-07-13 22:05:36,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-13 22:05:36,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-13 22:05:36,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6084 transitions. [2022-07-13 22:05:36,429 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.762406015037594 [2022-07-13 22:05:36,430 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6084 transitions. [2022-07-13 22:05:36,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6084 transitions. [2022-07-13 22:05:36,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:36,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6084 transitions. [2022-07-13 22:05:36,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.10526315789474) internal successors, (6084), 38 states have internal predecessors, (6084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:36,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:36,440 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:36,440 INFO L186 Difference]: Start difference. First operand has 657 places, 502 transitions, 7656 flow. Second operand 38 states and 6084 transitions. [2022-07-13 22:05:36,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 672 places, 635 transitions, 11615 flow [2022-07-13 22:05:36,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 646 places, 635 transitions, 11052 flow, removed 75 selfloop flow, removed 26 redundant places. [2022-07-13 22:05:36,923 INFO L242 Difference]: Finished difference. Result has 669 places, 522 transitions, 8102 flow [2022-07-13 22:05:36,924 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7248, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8102, PETRI_PLACES=669, PETRI_TRANSITIONS=522} [2022-07-13 22:05:36,924 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 482 predicate places. [2022-07-13 22:05:36,924 INFO L495 AbstractCegarLoop]: Abstraction has has 669 places, 522 transitions, 8102 flow [2022-07-13 22:05:36,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:36,924 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:36,924 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:36,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-07-13 22:05:36,925 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:36,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:36,925 INFO L85 PathProgramCache]: Analyzing trace with hash -850260178, now seen corresponding path program 39 times [2022-07-13 22:05:36,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:36,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391629632] [2022-07-13 22:05:36,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:36,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:37,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:37,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:37,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391629632] [2022-07-13 22:05:37,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391629632] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:37,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:37,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:37,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253785282] [2022-07-13 22:05:37,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:37,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:37,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:37,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:37,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:37,032 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:37,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 669 places, 522 transitions, 8102 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:37,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:37,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:38,398 INFO L129 PetriNetUnfolder]: 746/2815 cut-off events. [2022-07-13 22:05:38,399 INFO L130 PetriNetUnfolder]: For 68339/68389 co-relation queries the response was YES. [2022-07-13 22:05:38,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21064 conditions, 2815 events. 746/2815 cut-off events. For 68339/68389 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 22838 event pairs, 327 based on Foata normal form. 16/2763 useless extension candidates. Maximal degree in co-relation 20790. Up to 928 conditions per place. [2022-07-13 22:05:38,492 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 288 selfloop transitions, 145 changer transitions 71/653 dead transitions. [2022-07-13 22:05:38,492 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 681 places, 653 transitions, 11999 flow [2022-07-13 22:05:38,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-13 22:05:38,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-13 22:05:38,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5926 transitions. [2022-07-13 22:05:38,496 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7626769626769627 [2022-07-13 22:05:38,496 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5926 transitions. [2022-07-13 22:05:38,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5926 transitions. [2022-07-13 22:05:38,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:38,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5926 transitions. [2022-07-13 22:05:38,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.16216216216216) internal successors, (5926), 37 states have internal predecessors, (5926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,503 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,503 INFO L186 Difference]: Start difference. First operand has 669 places, 522 transitions, 8102 flow. Second operand 37 states and 5926 transitions. [2022-07-13 22:05:38,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 681 places, 653 transitions, 11999 flow [2022-07-13 22:05:38,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 653 transitions, 11716 flow, removed 77 selfloop flow, removed 19 redundant places. [2022-07-13 22:05:38,948 INFO L242 Difference]: Finished difference. Result has 686 places, 541 transitions, 8764 flow [2022-07-13 22:05:38,948 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7914, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=8764, PETRI_PLACES=686, PETRI_TRANSITIONS=541} [2022-07-13 22:05:38,949 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 499 predicate places. [2022-07-13 22:05:38,949 INFO L495 AbstractCegarLoop]: Abstraction has has 686 places, 541 transitions, 8764 flow [2022-07-13 22:05:38,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,949 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:38,949 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:38,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-07-13 22:05:38,949 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:38,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:38,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1813729488, now seen corresponding path program 40 times [2022-07-13 22:05:38,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:38,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281943815] [2022-07-13 22:05:38,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:38,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:39,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:39,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:39,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281943815] [2022-07-13 22:05:39,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281943815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:39,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:39,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:39,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469004316] [2022-07-13 22:05:39,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:39,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:39,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:39,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:39,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:39,063 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:39,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 686 places, 541 transitions, 8764 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:39,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:39,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:40,465 INFO L129 PetriNetUnfolder]: 741/2803 cut-off events. [2022-07-13 22:05:40,466 INFO L130 PetriNetUnfolder]: For 70001/70051 co-relation queries the response was YES. [2022-07-13 22:05:40,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21156 conditions, 2803 events. 741/2803 cut-off events. For 70001/70051 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22779 event pairs, 310 based on Foata normal form. 16/2751 useless extension candidates. Maximal degree in co-relation 20874. Up to 924 conditions per place. [2022-07-13 22:05:40,536 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 294 selfloop transitions, 152 changer transitions 75/670 dead transitions. [2022-07-13 22:05:40,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 700 places, 670 transitions, 12785 flow [2022-07-13 22:05:40,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-13 22:05:40,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-13 22:05:40,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6078 transitions. [2022-07-13 22:05:40,539 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7616541353383459 [2022-07-13 22:05:40,539 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6078 transitions. [2022-07-13 22:05:40,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6078 transitions. [2022-07-13 22:05:40,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:40,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6078 transitions. [2022-07-13 22:05:40,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.94736842105263) internal successors, (6078), 38 states have internal predecessors, (6078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:40,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:40,546 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:40,547 INFO L186 Difference]: Start difference. First operand has 686 places, 541 transitions, 8764 flow. Second operand 38 states and 6078 transitions. [2022-07-13 22:05:40,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 700 places, 670 transitions, 12785 flow [2022-07-13 22:05:41,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 670 transitions, 12466 flow, removed 86 selfloop flow, removed 21 redundant places. [2022-07-13 22:05:41,013 INFO L242 Difference]: Finished difference. Result has 702 places, 547 transitions, 9119 flow [2022-07-13 22:05:41,013 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8540, PETRI_DIFFERENCE_MINUEND_PLACES=642, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9119, PETRI_PLACES=702, PETRI_TRANSITIONS=547} [2022-07-13 22:05:41,013 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 515 predicate places. [2022-07-13 22:05:41,014 INFO L495 AbstractCegarLoop]: Abstraction has has 702 places, 547 transitions, 9119 flow [2022-07-13 22:05:41,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:41,014 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:41,014 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:41,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-07-13 22:05:41,014 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:41,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:41,015 INFO L85 PathProgramCache]: Analyzing trace with hash -963701778, now seen corresponding path program 41 times [2022-07-13 22:05:41,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:41,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40658726] [2022-07-13 22:05:41,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:41,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:41,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:41,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40658726] [2022-07-13 22:05:41,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40658726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:41,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:41,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:41,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751257596] [2022-07-13 22:05:41,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:41,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:41,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:41,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:41,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:41,131 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:41,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 702 places, 547 transitions, 9119 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:41,132 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:41,132 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:41,132 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:42,567 INFO L129 PetriNetUnfolder]: 736/2808 cut-off events. [2022-07-13 22:05:42,567 INFO L130 PetriNetUnfolder]: For 71092/71138 co-relation queries the response was YES. [2022-07-13 22:05:42,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21245 conditions, 2808 events. 736/2808 cut-off events. For 71092/71138 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22755 event pairs, 324 based on Foata normal form. 12/2752 useless extension candidates. Maximal degree in co-relation 20957. Up to 920 conditions per place. [2022-07-13 22:05:42,656 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 303 selfloop transitions, 144 changer transitions 75/671 dead transitions. [2022-07-13 22:05:42,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 715 places, 671 transitions, 13039 flow [2022-07-13 22:05:42,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-13 22:05:42,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-13 22:05:42,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6080 transitions. [2022-07-13 22:05:42,660 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-07-13 22:05:42,660 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6080 transitions. [2022-07-13 22:05:42,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6080 transitions. [2022-07-13 22:05:42,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:42,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6080 transitions. [2022-07-13 22:05:42,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.0) internal successors, (6080), 38 states have internal predecessors, (6080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,668 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,669 INFO L186 Difference]: Start difference. First operand has 702 places, 547 transitions, 9119 flow. Second operand 38 states and 6080 transitions. [2022-07-13 22:05:42,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 715 places, 671 transitions, 13039 flow [2022-07-13 22:05:43,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 694 places, 671 transitions, 12730 flow, removed 96 selfloop flow, removed 21 redundant places. [2022-07-13 22:05:43,175 INFO L242 Difference]: Finished difference. Result has 717 places, 552 transitions, 9440 flow [2022-07-13 22:05:43,175 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8897, PETRI_DIFFERENCE_MINUEND_PLACES=657, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9440, PETRI_PLACES=717, PETRI_TRANSITIONS=552} [2022-07-13 22:05:43,176 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 530 predicate places. [2022-07-13 22:05:43,176 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 552 transitions, 9440 flow [2022-07-13 22:05:43,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:43,176 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:43,176 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:43,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-07-13 22:05:43,176 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:43,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:43,177 INFO L85 PathProgramCache]: Analyzing trace with hash -313946166, now seen corresponding path program 42 times [2022-07-13 22:05:43,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:43,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680128872] [2022-07-13 22:05:43,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:43,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:43,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:43,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:43,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680128872] [2022-07-13 22:05:43,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680128872] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:43,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:43,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:43,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918845768] [2022-07-13 22:05:43,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:43,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:43,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:43,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:43,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:43,280 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:43,280 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 552 transitions, 9440 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:43,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:43,281 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:43,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:44,690 INFO L129 PetriNetUnfolder]: 730/2802 cut-off events. [2022-07-13 22:05:44,690 INFO L130 PetriNetUnfolder]: For 72044/72100 co-relation queries the response was YES. [2022-07-13 22:05:44,857 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21374 conditions, 2802 events. 730/2802 cut-off events. For 72044/72100 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 22804 event pairs, 324 based on Foata normal form. 16/2750 useless extension candidates. Maximal degree in co-relation 21081. Up to 916 conditions per place. [2022-07-13 22:05:44,866 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 297 selfloop transitions, 148 changer transitions 72/666 dead transitions. [2022-07-13 22:05:44,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 666 transitions, 13145 flow [2022-07-13 22:05:44,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-13 22:05:44,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-13 22:05:44,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5924 transitions. [2022-07-13 22:05:44,869 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7624195624195624 [2022-07-13 22:05:44,869 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5924 transitions. [2022-07-13 22:05:44,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5924 transitions. [2022-07-13 22:05:44,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:44,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5924 transitions. [2022-07-13 22:05:44,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.1081081081081) internal successors, (5924), 37 states have internal predecessors, (5924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:44,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:44,877 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:44,877 INFO L186 Difference]: Start difference. First operand has 717 places, 552 transitions, 9440 flow. Second operand 37 states and 5924 transitions. [2022-07-13 22:05:44,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 666 transitions, 13145 flow [2022-07-13 22:05:45,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 666 transitions, 12838 flow, removed 90 selfloop flow, removed 20 redundant places. [2022-07-13 22:05:45,333 INFO L242 Difference]: Finished difference. Result has 732 places, 555 transitions, 9710 flow [2022-07-13 22:05:45,333 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9220, PETRI_DIFFERENCE_MINUEND_PLACES=673, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9710, PETRI_PLACES=732, PETRI_TRANSITIONS=555} [2022-07-13 22:05:45,333 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 545 predicate places. [2022-07-13 22:05:45,333 INFO L495 AbstractCegarLoop]: Abstraction has has 732 places, 555 transitions, 9710 flow [2022-07-13 22:05:45,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:45,334 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:45,334 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:45,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-07-13 22:05:45,334 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:45,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:45,335 INFO L85 PathProgramCache]: Analyzing trace with hash 80858668, now seen corresponding path program 43 times [2022-07-13 22:05:45,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:45,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364565089] [2022-07-13 22:05:45,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:45,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:45,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:45,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:45,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364565089] [2022-07-13 22:05:45,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364565089] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:45,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:45,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:45,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488951328] [2022-07-13 22:05:45,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:45,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:45,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:45,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:45,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:45,436 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:45,437 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 555 transitions, 9710 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:45,437 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:45,437 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:45,437 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:46,770 INFO L129 PetriNetUnfolder]: 718/2747 cut-off events. [2022-07-13 22:05:46,770 INFO L130 PetriNetUnfolder]: For 71716/71772 co-relation queries the response was YES. [2022-07-13 22:05:46,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21031 conditions, 2747 events. 718/2747 cut-off events. For 71716/71772 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 22195 event pairs, 319 based on Foata normal form. 16/2696 useless extension candidates. Maximal degree in co-relation 20732. Up to 926 conditions per place. [2022-07-13 22:05:46,864 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 289 selfloop transitions, 162 changer transitions 66/666 dead transitions. [2022-07-13 22:05:46,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 738 places, 666 transitions, 13349 flow [2022-07-13 22:05:46,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:05:46,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:05:46,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4812 transitions. [2022-07-13 22:05:46,867 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7638095238095238 [2022-07-13 22:05:46,867 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4812 transitions. [2022-07-13 22:05:46,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4812 transitions. [2022-07-13 22:05:46,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:46,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4812 transitions. [2022-07-13 22:05:46,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.4) internal successors, (4812), 30 states have internal predecessors, (4812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:46,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:46,875 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:46,875 INFO L186 Difference]: Start difference. First operand has 732 places, 555 transitions, 9710 flow. Second operand 30 states and 4812 transitions. [2022-07-13 22:05:46,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 738 places, 666 transitions, 13349 flow [2022-07-13 22:05:47,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 711 places, 666 transitions, 12975 flow, removed 83 selfloop flow, removed 27 redundant places. [2022-07-13 22:05:47,452 INFO L242 Difference]: Finished difference. Result has 724 places, 560 transitions, 9986 flow [2022-07-13 22:05:47,453 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9399, PETRI_DIFFERENCE_MINUEND_PLACES=682, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9986, PETRI_PLACES=724, PETRI_TRANSITIONS=560} [2022-07-13 22:05:47,453 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 537 predicate places. [2022-07-13 22:05:47,453 INFO L495 AbstractCegarLoop]: Abstraction has has 724 places, 560 transitions, 9986 flow [2022-07-13 22:05:47,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,453 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:47,453 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:47,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-07-13 22:05:47,453 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:47,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:47,454 INFO L85 PathProgramCache]: Analyzing trace with hash -119362468, now seen corresponding path program 44 times [2022-07-13 22:05:47,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:47,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289819931] [2022-07-13 22:05:47,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:47,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:47,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:47,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:47,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289819931] [2022-07-13 22:05:47,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289819931] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:47,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:47,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:47,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534299222] [2022-07-13 22:05:47,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:47,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:47,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:47,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:47,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:47,554 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:47,554 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 724 places, 560 transitions, 9986 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,555 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:47,555 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:47,555 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:48,996 INFO L129 PetriNetUnfolder]: 724/2775 cut-off events. [2022-07-13 22:05:48,996 INFO L130 PetriNetUnfolder]: For 71492/71538 co-relation queries the response was YES. [2022-07-13 22:05:49,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21300 conditions, 2775 events. 724/2775 cut-off events. For 71492/71538 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 22450 event pairs, 329 based on Foata normal form. 12/2718 useless extension candidates. Maximal degree in co-relation 21011. Up to 926 conditions per place. [2022-07-13 22:05:49,058 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 285 selfloop transitions, 165 changer transitions 60/659 dead transitions. [2022-07-13 22:05:49,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 737 places, 659 transitions, 13348 flow [2022-07-13 22:05:49,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 22:05:49,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-13 22:05:49,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4658 transitions. [2022-07-13 22:05:49,061 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7648604269293925 [2022-07-13 22:05:49,061 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4658 transitions. [2022-07-13 22:05:49,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4658 transitions. [2022-07-13 22:05:49,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:49,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4658 transitions. [2022-07-13 22:05:49,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.6206896551724) internal successors, (4658), 29 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,068 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,068 INFO L186 Difference]: Start difference. First operand has 724 places, 560 transitions, 9986 flow. Second operand 29 states and 4658 transitions. [2022-07-13 22:05:49,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 737 places, 659 transitions, 13348 flow [2022-07-13 22:05:49,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 724 places, 659 transitions, 12977 flow, removed 85 selfloop flow, removed 13 redundant places. [2022-07-13 22:05:49,589 INFO L242 Difference]: Finished difference. Result has 738 places, 572 transitions, 10467 flow [2022-07-13 22:05:49,589 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9672, PETRI_DIFFERENCE_MINUEND_PLACES=696, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=10467, PETRI_PLACES=738, PETRI_TRANSITIONS=572} [2022-07-13 22:05:49,589 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 551 predicate places. [2022-07-13 22:05:49,589 INFO L495 AbstractCegarLoop]: Abstraction has has 738 places, 572 transitions, 10467 flow [2022-07-13 22:05:49,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,590 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:49,590 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:49,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-07-13 22:05:49,590 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:49,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:49,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1808042808, now seen corresponding path program 45 times [2022-07-13 22:05:49,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:49,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904968549] [2022-07-13 22:05:49,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:49,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:49,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:49,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:49,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904968549] [2022-07-13 22:05:49,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904968549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:49,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:49,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:49,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514598568] [2022-07-13 22:05:49,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:49,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:49,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:49,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:49,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:49,710 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:49,711 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 738 places, 572 transitions, 10467 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,711 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:49,711 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:49,711 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:50,925 INFO L129 PetriNetUnfolder]: 711/2722 cut-off events. [2022-07-13 22:05:50,925 INFO L130 PetriNetUnfolder]: For 69917/69977 co-relation queries the response was YES. [2022-07-13 22:05:50,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20770 conditions, 2722 events. 711/2722 cut-off events. For 69917/69977 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 21987 event pairs, 310 based on Foata normal form. 20/2675 useless extension candidates. Maximal degree in co-relation 20476. Up to 926 conditions per place. [2022-07-13 22:05:50,993 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 290 selfloop transitions, 147 changer transitions 71/657 dead transitions. [2022-07-13 22:05:50,993 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 751 places, 657 transitions, 13264 flow [2022-07-13 22:05:50,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-13 22:05:50,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-13 22:05:50,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4492 transitions. [2022-07-13 22:05:50,995 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7639455782312925 [2022-07-13 22:05:50,995 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4492 transitions. [2022-07-13 22:05:50,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4492 transitions. [2022-07-13 22:05:50,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:50,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4492 transitions. [2022-07-13 22:05:50,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.42857142857142) internal successors, (4492), 28 states have internal predecessors, (4492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,001 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,001 INFO L186 Difference]: Start difference. First operand has 738 places, 572 transitions, 10467 flow. Second operand 28 states and 4492 transitions. [2022-07-13 22:05:51,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 751 places, 657 transitions, 13264 flow [2022-07-13 22:05:51,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 737 places, 657 transitions, 12878 flow, removed 71 selfloop flow, removed 14 redundant places. [2022-07-13 22:05:51,511 INFO L242 Difference]: Finished difference. Result has 746 places, 547 transitions, 9698 flow [2022-07-13 22:05:51,512 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10112, PETRI_DIFFERENCE_MINUEND_PLACES=710, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=9698, PETRI_PLACES=746, PETRI_TRANSITIONS=547} [2022-07-13 22:05:51,512 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 559 predicate places. [2022-07-13 22:05:51,512 INFO L495 AbstractCegarLoop]: Abstraction has has 746 places, 547 transitions, 9698 flow [2022-07-13 22:05:51,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,512 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:51,512 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:51,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-07-13 22:05:51,513 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:51,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:51,513 INFO L85 PathProgramCache]: Analyzing trace with hash 2072334494, now seen corresponding path program 46 times [2022-07-13 22:05:51,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:51,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658422891] [2022-07-13 22:05:51,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:51,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:51,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:51,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:51,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658422891] [2022-07-13 22:05:51,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658422891] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:51,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:51,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:51,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184589461] [2022-07-13 22:05:51,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:51,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:51,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:51,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:51,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:51,616 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:51,617 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 746 places, 547 transitions, 9698 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:51,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:51,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:52,904 INFO L129 PetriNetUnfolder]: 704/2698 cut-off events. [2022-07-13 22:05:52,904 INFO L130 PetriNetUnfolder]: For 69701/69751 co-relation queries the response was YES. [2022-07-13 22:05:52,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20637 conditions, 2698 events. 704/2698 cut-off events. For 69701/69751 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 21603 event pairs, 317 based on Foata normal form. 16/2647 useless extension candidates. Maximal degree in co-relation 20343. Up to 926 conditions per place. [2022-07-13 22:05:52,970 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 276 selfloop transitions, 149 changer transitions 62/636 dead transitions. [2022-07-13 22:05:52,970 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 742 places, 636 transitions, 12778 flow [2022-07-13 22:05:52,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:05:52,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:05:52,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4814 transitions. [2022-07-13 22:05:52,972 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7641269841269841 [2022-07-13 22:05:52,972 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4814 transitions. [2022-07-13 22:05:52,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4814 transitions. [2022-07-13 22:05:52,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:52,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4814 transitions. [2022-07-13 22:05:52,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.46666666666667) internal successors, (4814), 30 states have internal predecessors, (4814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,978 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,978 INFO L186 Difference]: Start difference. First operand has 746 places, 547 transitions, 9698 flow. Second operand 30 states and 4814 transitions. [2022-07-13 22:05:52,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 742 places, 636 transitions, 12778 flow [2022-07-13 22:05:53,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 636 transitions, 12039 flow, removed 36 selfloop flow, removed 33 redundant places. [2022-07-13 22:05:53,441 INFO L242 Difference]: Finished difference. Result has 720 places, 548 transitions, 9508 flow [2022-07-13 22:05:53,441 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9084, PETRI_DIFFERENCE_MINUEND_PLACES=680, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9508, PETRI_PLACES=720, PETRI_TRANSITIONS=548} [2022-07-13 22:05:53,441 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 533 predicate places. [2022-07-13 22:05:53,441 INFO L495 AbstractCegarLoop]: Abstraction has has 720 places, 548 transitions, 9508 flow [2022-07-13 22:05:53,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,442 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:53,442 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:53,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-07-13 22:05:53,442 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:53,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:53,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1156223170, now seen corresponding path program 47 times [2022-07-13 22:05:53,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:53,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082209724] [2022-07-13 22:05:53,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:53,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:53,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:53,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:53,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082209724] [2022-07-13 22:05:53,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082209724] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:53,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:53,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:53,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660264790] [2022-07-13 22:05:53,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:53,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:53,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:53,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:53,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:53,541 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:53,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 720 places, 548 transitions, 9508 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:53,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:53,542 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:54,785 INFO L129 PetriNetUnfolder]: 699/2686 cut-off events. [2022-07-13 22:05:54,785 INFO L130 PetriNetUnfolder]: For 65568/65624 co-relation queries the response was YES. [2022-07-13 22:05:54,851 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20088 conditions, 2686 events. 699/2686 cut-off events. For 65568/65624 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 21542 event pairs, 330 based on Foata normal form. 16/2635 useless extension candidates. Maximal degree in co-relation 19802. Up to 926 conditions per place. [2022-07-13 22:05:54,860 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 274 selfloop transitions, 137 changer transitions 64/624 dead transitions. [2022-07-13 22:05:54,861 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 734 places, 624 transitions, 12039 flow [2022-07-13 22:05:54,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:05:54,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:05:54,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4809 transitions. [2022-07-13 22:05:54,863 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2022-07-13 22:05:54,863 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4809 transitions. [2022-07-13 22:05:54,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4809 transitions. [2022-07-13 22:05:54,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:54,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4809 transitions. [2022-07-13 22:05:54,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.3) internal successors, (4809), 30 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,870 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,870 INFO L186 Difference]: Start difference. First operand has 720 places, 548 transitions, 9508 flow. Second operand 30 states and 4809 transitions. [2022-07-13 22:05:54,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 734 places, 624 transitions, 12039 flow [2022-07-13 22:05:55,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 720 places, 624 transitions, 11644 flow, removed 76 selfloop flow, removed 14 redundant places. [2022-07-13 22:05:55,387 INFO L242 Difference]: Finished difference. Result has 732 places, 535 transitions, 9110 flow [2022-07-13 22:05:55,387 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9155, PETRI_DIFFERENCE_MINUEND_PLACES=691, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9110, PETRI_PLACES=732, PETRI_TRANSITIONS=535} [2022-07-13 22:05:55,388 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 545 predicate places. [2022-07-13 22:05:55,388 INFO L495 AbstractCegarLoop]: Abstraction has has 732 places, 535 transitions, 9110 flow [2022-07-13 22:05:55,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:55,388 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:55,388 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:55,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-07-13 22:05:55,388 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:55,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:55,388 INFO L85 PathProgramCache]: Analyzing trace with hash 787999338, now seen corresponding path program 48 times [2022-07-13 22:05:55,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:55,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585781307] [2022-07-13 22:05:55,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:55,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:55,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:55,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:55,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585781307] [2022-07-13 22:05:55,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585781307] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:55,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:55,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:55,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196136] [2022-07-13 22:05:55,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:55,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:55,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:55,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:55,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:55,490 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:55,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 535 transitions, 9110 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:55,490 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:55,490 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:55,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:56,741 INFO L129 PetriNetUnfolder]: 690/2657 cut-off events. [2022-07-13 22:05:56,741 INFO L130 PetriNetUnfolder]: For 65558/65618 co-relation queries the response was YES. [2022-07-13 22:05:56,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19864 conditions, 2657 events. 690/2657 cut-off events. For 65558/65618 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 21255 event pairs, 315 based on Foata normal form. 20/2609 useless extension candidates. Maximal degree in co-relation 19576. Up to 920 conditions per place. [2022-07-13 22:05:56,816 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 288 selfloop transitions, 132 changer transitions 62/631 dead transitions. [2022-07-13 22:05:56,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 734 places, 631 transitions, 12261 flow [2022-07-13 22:05:56,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:05:56,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:05:56,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4818 transitions. [2022-07-13 22:05:56,819 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7647619047619048 [2022-07-13 22:05:56,819 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4818 transitions. [2022-07-13 22:05:56,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4818 transitions. [2022-07-13 22:05:56,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:56,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4818 transitions. [2022-07-13 22:05:56,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.6) internal successors, (4818), 30 states have internal predecessors, (4818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,825 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,825 INFO L186 Difference]: Start difference. First operand has 732 places, 535 transitions, 9110 flow. Second operand 30 states and 4818 transitions. [2022-07-13 22:05:56,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 734 places, 631 transitions, 12261 flow [2022-07-13 22:05:57,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 702 places, 631 transitions, 11662 flow, removed 42 selfloop flow, removed 32 redundant places. [2022-07-13 22:05:57,270 INFO L242 Difference]: Finished difference. Result has 716 places, 540 transitions, 9076 flow [2022-07-13 22:05:57,271 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8626, PETRI_DIFFERENCE_MINUEND_PLACES=673, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9076, PETRI_PLACES=716, PETRI_TRANSITIONS=540} [2022-07-13 22:05:57,271 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 529 predicate places. [2022-07-13 22:05:57,271 INFO L495 AbstractCegarLoop]: Abstraction has has 716 places, 540 transitions, 9076 flow [2022-07-13 22:05:57,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:57,272 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:57,272 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:57,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-07-13 22:05:57,272 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:57,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:57,272 INFO L85 PathProgramCache]: Analyzing trace with hash 952138132, now seen corresponding path program 49 times [2022-07-13 22:05:57,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:57,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152785291] [2022-07-13 22:05:57,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:57,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:57,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:57,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:57,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152785291] [2022-07-13 22:05:57,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152785291] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:57,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:57,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:57,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918599580] [2022-07-13 22:05:57,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:57,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:57,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:57,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:57,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:57,370 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:57,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 716 places, 540 transitions, 9076 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:57,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:57,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:57,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:58,642 INFO L129 PetriNetUnfolder]: 697/2677 cut-off events. [2022-07-13 22:05:58,642 INFO L130 PetriNetUnfolder]: For 65563/65619 co-relation queries the response was YES. [2022-07-13 22:05:58,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19965 conditions, 2677 events. 697/2677 cut-off events. For 65563/65619 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 21430 event pairs, 322 based on Foata normal form. 16/2626 useless extension candidates. Maximal degree in co-relation 19682. Up to 926 conditions per place. [2022-07-13 22:05:58,727 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 295 selfloop transitions, 137 changer transitions 61/642 dead transitions. [2022-07-13 22:05:58,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 642 transitions, 12456 flow [2022-07-13 22:05:58,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 22:05:58,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-13 22:05:58,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4664 transitions. [2022-07-13 22:05:58,729 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7658456486042693 [2022-07-13 22:05:58,729 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4664 transitions. [2022-07-13 22:05:58,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4664 transitions. [2022-07-13 22:05:58,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:58,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4664 transitions. [2022-07-13 22:05:58,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.82758620689654) internal successors, (4664), 29 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,735 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,735 INFO L186 Difference]: Start difference. First operand has 716 places, 540 transitions, 9076 flow. Second operand 29 states and 4664 transitions. [2022-07-13 22:05:58,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 642 transitions, 12456 flow [2022-07-13 22:05:59,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 715 places, 642 transitions, 12127 flow, removed 94 selfloop flow, removed 14 redundant places. [2022-07-13 22:05:59,189 INFO L242 Difference]: Finished difference. Result has 729 places, 552 transitions, 9521 flow [2022-07-13 22:05:59,189 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8846, PETRI_DIFFERENCE_MINUEND_PLACES=687, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9521, PETRI_PLACES=729, PETRI_TRANSITIONS=552} [2022-07-13 22:05:59,189 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 542 predicate places. [2022-07-13 22:05:59,189 INFO L495 AbstractCegarLoop]: Abstraction has has 729 places, 552 transitions, 9521 flow [2022-07-13 22:05:59,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:59,190 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:59,190 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:59,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-07-13 22:05:59,190 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:59,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:59,190 INFO L85 PathProgramCache]: Analyzing trace with hash -342525194, now seen corresponding path program 50 times [2022-07-13 22:05:59,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:59,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644684851] [2022-07-13 22:05:59,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:59,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:59,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:59,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644684851] [2022-07-13 22:05:59,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644684851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:59,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:59,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:05:59,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267107382] [2022-07-13 22:05:59,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:59,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:05:59,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:59,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:05:59,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:59,307 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:05:59,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 729 places, 552 transitions, 9521 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:59,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:59,308 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:05:59,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:00,600 INFO L129 PetriNetUnfolder]: 698/2682 cut-off events. [2022-07-13 22:06:00,600 INFO L130 PetriNetUnfolder]: For 67023/67073 co-relation queries the response was YES. [2022-07-13 22:06:00,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20195 conditions, 2682 events. 698/2682 cut-off events. For 67023/67073 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 21502 event pairs, 315 based on Foata normal form. 16/2630 useless extension candidates. Maximal degree in co-relation 19908. Up to 926 conditions per place. [2022-07-13 22:06:00,689 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 303 selfloop transitions, 137 changer transitions 60/649 dead transitions. [2022-07-13 22:06:00,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 743 places, 649 transitions, 12834 flow [2022-07-13 22:06:00,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 22:06:00,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-13 22:06:00,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4664 transitions. [2022-07-13 22:06:00,691 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7658456486042693 [2022-07-13 22:06:00,691 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4664 transitions. [2022-07-13 22:06:00,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4664 transitions. [2022-07-13 22:06:00,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:00,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4664 transitions. [2022-07-13 22:06:00,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.82758620689654) internal successors, (4664), 29 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,697 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,698 INFO L186 Difference]: Start difference. First operand has 729 places, 552 transitions, 9521 flow. Second operand 29 states and 4664 transitions. [2022-07-13 22:06:00,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 743 places, 649 transitions, 12834 flow [2022-07-13 22:06:01,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 730 places, 649 transitions, 12541 flow, removed 61 selfloop flow, removed 13 redundant places. [2022-07-13 22:06:01,175 INFO L242 Difference]: Finished difference. Result has 743 places, 563 transitions, 9994 flow [2022-07-13 22:06:01,175 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9303, PETRI_DIFFERENCE_MINUEND_PLACES=702, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9994, PETRI_PLACES=743, PETRI_TRANSITIONS=563} [2022-07-13 22:06:01,175 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 556 predicate places. [2022-07-13 22:06:01,175 INFO L495 AbstractCegarLoop]: Abstraction has has 743 places, 563 transitions, 9994 flow [2022-07-13 22:06:01,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:01,175 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:01,176 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:01,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-07-13 22:06:01,176 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:01,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:01,176 INFO L85 PathProgramCache]: Analyzing trace with hash -78170232, now seen corresponding path program 51 times [2022-07-13 22:06:01,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:01,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048426319] [2022-07-13 22:06:01,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:01,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:01,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:01,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:01,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048426319] [2022-07-13 22:06:01,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048426319] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:01,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:01,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:01,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693864179] [2022-07-13 22:06:01,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:01,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:01,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:01,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:01,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:01,279 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:01,280 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 563 transitions, 9994 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:01,280 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:01,280 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:01,280 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:02,598 INFO L129 PetriNetUnfolder]: 681/2667 cut-off events. [2022-07-13 22:06:02,598 INFO L130 PetriNetUnfolder]: For 65438/65484 co-relation queries the response was YES. [2022-07-13 22:06:02,655 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19773 conditions, 2667 events. 681/2667 cut-off events. For 65438/65484 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 21411 event pairs, 321 based on Foata normal form. 12/2613 useless extension candidates. Maximal degree in co-relation 19481. Up to 922 conditions per place. [2022-07-13 22:06:02,664 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 300 selfloop transitions, 118 changer transitions 66/633 dead transitions. [2022-07-13 22:06:02,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 758 places, 633 transitions, 12378 flow [2022-07-13 22:06:02,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:06:02,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:06:02,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4815 transitions. [2022-07-13 22:06:02,667 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-07-13 22:06:02,667 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4815 transitions. [2022-07-13 22:06:02,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4815 transitions. [2022-07-13 22:06:02,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:02,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4815 transitions. [2022-07-13 22:06:02,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.5) internal successors, (4815), 30 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:02,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:02,766 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:02,766 INFO L186 Difference]: Start difference. First operand has 743 places, 563 transitions, 9994 flow. Second operand 30 states and 4815 transitions. [2022-07-13 22:06:02,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 758 places, 633 transitions, 12378 flow [2022-07-13 22:06:03,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 744 places, 633 transitions, 12012 flow, removed 69 selfloop flow, removed 14 redundant places. [2022-07-13 22:06:03,227 INFO L242 Difference]: Finished difference. Result has 753 places, 541 transitions, 9274 flow [2022-07-13 22:06:03,227 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9654, PETRI_DIFFERENCE_MINUEND_PLACES=715, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9274, PETRI_PLACES=753, PETRI_TRANSITIONS=541} [2022-07-13 22:06:03,227 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 566 predicate places. [2022-07-13 22:06:03,227 INFO L495 AbstractCegarLoop]: Abstraction has has 753 places, 541 transitions, 9274 flow [2022-07-13 22:06:03,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:03,228 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:03,228 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:03,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-07-13 22:06:03,228 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:03,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:03,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1649624902, now seen corresponding path program 52 times [2022-07-13 22:06:03,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:03,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695168129] [2022-07-13 22:06:03,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:03,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:03,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:03,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:03,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695168129] [2022-07-13 22:06:03,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695168129] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:03,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:03,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:03,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703949977] [2022-07-13 22:06:03,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:03,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:03,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:03,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:03,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:03,337 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:03,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 753 places, 541 transitions, 9274 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:03,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:03,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:03,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:04,469 INFO L129 PetriNetUnfolder]: 659/2578 cut-off events. [2022-07-13 22:06:04,469 INFO L130 PetriNetUnfolder]: For 62835/62891 co-relation queries the response was YES. [2022-07-13 22:06:04,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18953 conditions, 2578 events. 659/2578 cut-off events. For 62835/62891 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 20409 event pairs, 319 based on Foata normal form. 16/2530 useless extension candidates. Maximal degree in co-relation 18661. Up to 910 conditions per place. [2022-07-13 22:06:04,531 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 270 selfloop transitions, 111 changer transitions 66/596 dead transitions. [2022-07-13 22:06:04,532 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 754 places, 596 transitions, 11220 flow [2022-07-13 22:06:04,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 22:06:04,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-13 22:06:04,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4643 transitions. [2022-07-13 22:06:04,534 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7623973727422003 [2022-07-13 22:06:04,534 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4643 transitions. [2022-07-13 22:06:04,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4643 transitions. [2022-07-13 22:06:04,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:04,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4643 transitions. [2022-07-13 22:06:04,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.10344827586206) internal successors, (4643), 29 states have internal predecessors, (4643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:04,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:04,540 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:04,540 INFO L186 Difference]: Start difference. First operand has 753 places, 541 transitions, 9274 flow. Second operand 29 states and 4643 transitions. [2022-07-13 22:06:04,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 754 places, 596 transitions, 11220 flow [2022-07-13 22:06:04,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 723 places, 596 transitions, 10795 flow, removed 36 selfloop flow, removed 31 redundant places. [2022-07-13 22:06:04,995 INFO L242 Difference]: Finished difference. Result has 732 places, 505 transitions, 8177 flow [2022-07-13 22:06:04,995 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8898, PETRI_DIFFERENCE_MINUEND_PLACES=695, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8177, PETRI_PLACES=732, PETRI_TRANSITIONS=505} [2022-07-13 22:06:04,995 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 545 predicate places. [2022-07-13 22:06:04,995 INFO L495 AbstractCegarLoop]: Abstraction has has 732 places, 505 transitions, 8177 flow [2022-07-13 22:06:04,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:04,996 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:04,996 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:04,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-07-13 22:06:04,996 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:04,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:04,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1947419316, now seen corresponding path program 53 times [2022-07-13 22:06:04,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:04,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270522496] [2022-07-13 22:06:04,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:04,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:05,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:05,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:05,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270522496] [2022-07-13 22:06:05,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270522496] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:05,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:05,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:05,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605823687] [2022-07-13 22:06:05,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:05,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:05,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:05,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:05,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:05,132 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:05,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 505 transitions, 8177 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:05,132 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:05,132 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:05,132 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:06,445 INFO L129 PetriNetUnfolder]: 650/2559 cut-off events. [2022-07-13 22:06:06,446 INFO L130 PetriNetUnfolder]: For 60842/60902 co-relation queries the response was YES. [2022-07-13 22:06:06,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18580 conditions, 2559 events. 650/2559 cut-off events. For 60842/60902 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 20278 event pairs, 304 based on Foata normal form. 20/2516 useless extension candidates. Maximal degree in co-relation 18298. Up to 906 conditions per place. [2022-07-13 22:06:06,503 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 271 selfloop transitions, 119 changer transitions 63/602 dead transitions. [2022-07-13 22:06:06,503 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 602 transitions, 11286 flow [2022-07-13 22:06:06,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:06:06,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:06:06,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4814 transitions. [2022-07-13 22:06:06,506 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7641269841269841 [2022-07-13 22:06:06,506 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4814 transitions. [2022-07-13 22:06:06,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4814 transitions. [2022-07-13 22:06:06,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:06,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4814 transitions. [2022-07-13 22:06:06,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.46666666666667) internal successors, (4814), 30 states have internal predecessors, (4814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:06,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:06,513 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:06,513 INFO L186 Difference]: Start difference. First operand has 732 places, 505 transitions, 8177 flow. Second operand 30 states and 4814 transitions. [2022-07-13 22:06:06,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 717 places, 602 transitions, 11286 flow [2022-07-13 22:06:06,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 682 places, 602 transitions, 10582 flow, removed 42 selfloop flow, removed 35 redundant places. [2022-07-13 22:06:06,927 INFO L242 Difference]: Finished difference. Result has 696 places, 510 transitions, 8035 flow [2022-07-13 22:06:06,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7609, PETRI_DIFFERENCE_MINUEND_PLACES=653, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8035, PETRI_PLACES=696, PETRI_TRANSITIONS=510} [2022-07-13 22:06:06,927 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 509 predicate places. [2022-07-13 22:06:06,927 INFO L495 AbstractCegarLoop]: Abstraction has has 696 places, 510 transitions, 8035 flow [2022-07-13 22:06:06,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:06,928 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:06,928 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:06,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-07-13 22:06:06,928 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:06,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:06,928 INFO L85 PathProgramCache]: Analyzing trace with hash 145093448, now seen corresponding path program 54 times [2022-07-13 22:06:06,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:06,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803452229] [2022-07-13 22:06:06,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:06,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:07,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:07,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:07,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803452229] [2022-07-13 22:06:07,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803452229] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:07,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:07,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:07,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520305624] [2022-07-13 22:06:07,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:07,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:07,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:07,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:07,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:07,049 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:07,050 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 696 places, 510 transitions, 8035 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:07,050 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:07,050 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:07,050 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:08,338 INFO L129 PetriNetUnfolder]: 644/2560 cut-off events. [2022-07-13 22:06:08,339 INFO L130 PetriNetUnfolder]: For 58496/58542 co-relation queries the response was YES. [2022-07-13 22:06:08,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18257 conditions, 2560 events. 644/2560 cut-off events. For 58496/58542 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 20327 event pairs, 311 based on Foata normal form. 12/2510 useless extension candidates. Maximal degree in co-relation 17982. Up to 904 conditions per place. [2022-07-13 22:06:08,412 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 286 selfloop transitions, 110 changer transitions 61/606 dead transitions. [2022-07-13 22:06:08,412 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 710 places, 606 transitions, 11146 flow [2022-07-13 22:06:08,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:06:08,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:06:08,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4820 transitions. [2022-07-13 22:06:08,415 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2022-07-13 22:06:08,415 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4820 transitions. [2022-07-13 22:06:08,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4820 transitions. [2022-07-13 22:06:08,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:08,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4820 transitions. [2022-07-13 22:06:08,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.66666666666666) internal successors, (4820), 30 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:08,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:08,421 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:08,421 INFO L186 Difference]: Start difference. First operand has 696 places, 510 transitions, 8035 flow. Second operand 30 states and 4820 transitions. [2022-07-13 22:06:08,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 710 places, 606 transitions, 11146 flow [2022-07-13 22:06:08,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 697 places, 606 transitions, 10830 flow, removed 107 selfloop flow, removed 13 redundant places. [2022-07-13 22:06:08,845 INFO L242 Difference]: Finished difference. Result has 711 places, 515 transitions, 8226 flow [2022-07-13 22:06:08,845 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7820, PETRI_DIFFERENCE_MINUEND_PLACES=668, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8226, PETRI_PLACES=711, PETRI_TRANSITIONS=515} [2022-07-13 22:06:08,845 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 524 predicate places. [2022-07-13 22:06:08,845 INFO L495 AbstractCegarLoop]: Abstraction has has 711 places, 515 transitions, 8226 flow [2022-07-13 22:06:08,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:08,846 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:08,846 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:08,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-07-13 22:06:08,846 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:08,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:08,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1100214164, now seen corresponding path program 55 times [2022-07-13 22:06:08,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:08,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007844951] [2022-07-13 22:06:08,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:08,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:08,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:08,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007844951] [2022-07-13 22:06:08,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007844951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:08,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:08,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:08,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316907209] [2022-07-13 22:06:08,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:08,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:08,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:08,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:08,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:08,978 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:08,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 515 transitions, 8226 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:08,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:08,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:08,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:10,103 INFO L129 PetriNetUnfolder]: 650/2568 cut-off events. [2022-07-13 22:06:10,103 INFO L130 PetriNetUnfolder]: For 60491/60541 co-relation queries the response was YES. [2022-07-13 22:06:10,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18466 conditions, 2568 events. 650/2568 cut-off events. For 60491/60541 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 20369 event pairs, 302 based on Foata normal form. 16/2522 useless extension candidates. Maximal degree in co-relation 18187. Up to 908 conditions per place. [2022-07-13 22:06:10,180 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 279 selfloop transitions, 128 changer transitions 61/617 dead transitions. [2022-07-13 22:06:10,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 724 places, 617 transitions, 11585 flow [2022-07-13 22:06:10,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 22:06:10,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-13 22:06:10,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4660 transitions. [2022-07-13 22:06:10,183 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7651888341543513 [2022-07-13 22:06:10,183 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4660 transitions. [2022-07-13 22:06:10,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4660 transitions. [2022-07-13 22:06:10,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:10,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4660 transitions. [2022-07-13 22:06:10,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.68965517241378) internal successors, (4660), 29 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:10,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:10,189 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:10,189 INFO L186 Difference]: Start difference. First operand has 711 places, 515 transitions, 8226 flow. Second operand 29 states and 4660 transitions. [2022-07-13 22:06:10,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 724 places, 617 transitions, 11585 flow [2022-07-13 22:06:10,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 617 transitions, 11255 flow, removed 87 selfloop flow, removed 15 redundant places. [2022-07-13 22:06:10,625 INFO L242 Difference]: Finished difference. Result has 723 places, 527 transitions, 8664 flow [2022-07-13 22:06:10,625 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7987, PETRI_DIFFERENCE_MINUEND_PLACES=681, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8664, PETRI_PLACES=723, PETRI_TRANSITIONS=527} [2022-07-13 22:06:10,625 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 536 predicate places. [2022-07-13 22:06:10,625 INFO L495 AbstractCegarLoop]: Abstraction has has 723 places, 527 transitions, 8664 flow [2022-07-13 22:06:10,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:10,626 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:10,626 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:10,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-07-13 22:06:10,626 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:10,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:10,626 INFO L85 PathProgramCache]: Analyzing trace with hash -110260844, now seen corresponding path program 56 times [2022-07-13 22:06:10,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:10,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649501568] [2022-07-13 22:06:10,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:10,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:10,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:10,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:10,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649501568] [2022-07-13 22:06:10,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649501568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:10,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:10,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:10,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713680576] [2022-07-13 22:06:10,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:10,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:10,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:10,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:10,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:10,740 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:10,741 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 723 places, 527 transitions, 8664 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:10,741 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:10,741 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:10,741 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:11,877 INFO L129 PetriNetUnfolder]: 647/2581 cut-off events. [2022-07-13 22:06:11,877 INFO L130 PetriNetUnfolder]: For 61069/61115 co-relation queries the response was YES. [2022-07-13 22:06:11,931 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18630 conditions, 2581 events. 647/2581 cut-off events. For 61069/61115 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 20530 event pairs, 311 based on Foata normal form. 12/2531 useless extension candidates. Maximal degree in co-relation 18347. Up to 910 conditions per place. [2022-07-13 22:06:11,939 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 291 selfloop transitions, 124 changer transitions 60/624 dead transitions. [2022-07-13 22:06:11,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 737 places, 624 transitions, 11921 flow [2022-07-13 22:06:11,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 22:06:11,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-13 22:06:11,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4660 transitions. [2022-07-13 22:06:11,942 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7651888341543513 [2022-07-13 22:06:11,942 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4660 transitions. [2022-07-13 22:06:11,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4660 transitions. [2022-07-13 22:06:11,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:11,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4660 transitions. [2022-07-13 22:06:11,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.68965517241378) internal successors, (4660), 29 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:11,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:11,948 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:11,948 INFO L186 Difference]: Start difference. First operand has 723 places, 527 transitions, 8664 flow. Second operand 29 states and 4660 transitions. [2022-07-13 22:06:11,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 737 places, 624 transitions, 11921 flow [2022-07-13 22:06:12,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 724 places, 624 transitions, 11628 flow, removed 63 selfloop flow, removed 13 redundant places. [2022-07-13 22:06:12,362 INFO L242 Difference]: Finished difference. Result has 737 places, 538 transitions, 9089 flow [2022-07-13 22:06:12,363 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8442, PETRI_DIFFERENCE_MINUEND_PLACES=696, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9089, PETRI_PLACES=737, PETRI_TRANSITIONS=538} [2022-07-13 22:06:12,363 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 550 predicate places. [2022-07-13 22:06:12,363 INFO L495 AbstractCegarLoop]: Abstraction has has 737 places, 538 transitions, 9089 flow [2022-07-13 22:06:12,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:12,363 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:12,363 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:12,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-07-13 22:06:12,364 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:12,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:12,364 INFO L85 PathProgramCache]: Analyzing trace with hash -207531796, now seen corresponding path program 57 times [2022-07-13 22:06:12,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:12,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679962984] [2022-07-13 22:06:12,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:12,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:12,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:12,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:12,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679962984] [2022-07-13 22:06:12,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679962984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:12,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:12,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:12,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867653541] [2022-07-13 22:06:12,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:12,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:12,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:12,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:12,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:12,472 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:12,473 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 737 places, 538 transitions, 9089 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:12,473 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:12,473 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:12,473 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:13,689 INFO L129 PetriNetUnfolder]: 630/2544 cut-off events. [2022-07-13 22:06:13,689 INFO L130 PetriNetUnfolder]: For 58909/58955 co-relation queries the response was YES. [2022-07-13 22:06:13,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18158 conditions, 2544 events. 630/2544 cut-off events. For 58909/58955 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 20196 event pairs, 310 based on Foata normal form. 12/2494 useless extension candidates. Maximal degree in co-relation 17870. Up to 904 conditions per place. [2022-07-13 22:06:13,761 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 286 selfloop transitions, 105 changer transitions 66/606 dead transitions. [2022-07-13 22:06:13,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 752 places, 606 transitions, 11400 flow [2022-07-13 22:06:13,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:06:13,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:06:13,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4810 transitions. [2022-07-13 22:06:13,764 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7634920634920634 [2022-07-13 22:06:13,764 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4810 transitions. [2022-07-13 22:06:13,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4810 transitions. [2022-07-13 22:06:13,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:13,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4810 transitions. [2022-07-13 22:06:13,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.33333333333334) internal successors, (4810), 30 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:13,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:13,770 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:13,770 INFO L186 Difference]: Start difference. First operand has 737 places, 538 transitions, 9089 flow. Second operand 30 states and 4810 transitions. [2022-07-13 22:06:13,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 752 places, 606 transitions, 11400 flow [2022-07-13 22:06:14,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 739 places, 606 transitions, 11069 flow, removed 62 selfloop flow, removed 13 redundant places. [2022-07-13 22:06:14,210 INFO L242 Difference]: Finished difference. Result has 746 places, 514 transitions, 8315 flow [2022-07-13 22:06:14,210 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8786, PETRI_DIFFERENCE_MINUEND_PLACES=710, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8315, PETRI_PLACES=746, PETRI_TRANSITIONS=514} [2022-07-13 22:06:14,211 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 559 predicate places. [2022-07-13 22:06:14,211 INFO L495 AbstractCegarLoop]: Abstraction has has 746 places, 514 transitions, 8315 flow [2022-07-13 22:06:14,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:14,211 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:14,211 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:14,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-07-13 22:06:14,211 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:14,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:14,212 INFO L85 PathProgramCache]: Analyzing trace with hash 505069874, now seen corresponding path program 58 times [2022-07-13 22:06:14,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:14,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025557068] [2022-07-13 22:06:14,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:14,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:14,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:14,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:14,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025557068] [2022-07-13 22:06:14,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025557068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:14,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:14,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:14,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955237166] [2022-07-13 22:06:14,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:14,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:14,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:14,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:14,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:14,320 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:14,321 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 746 places, 514 transitions, 8315 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:14,321 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:14,321 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:14,321 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:15,593 INFO L129 PetriNetUnfolder]: 612/2460 cut-off events. [2022-07-13 22:06:15,593 INFO L130 PetriNetUnfolder]: For 56542/56598 co-relation queries the response was YES. [2022-07-13 22:06:15,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17427 conditions, 2460 events. 612/2460 cut-off events. For 56542/56598 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 19248 event pairs, 307 based on Foata normal form. 16/2414 useless extension candidates. Maximal degree in co-relation 17140. Up to 894 conditions per place. [2022-07-13 22:06:15,669 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 277 selfloop transitions, 88 changer transitions 63/577 dead transitions. [2022-07-13 22:06:15,669 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 748 places, 577 transitions, 10457 flow [2022-07-13 22:06:15,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:06:15,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:06:15,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4806 transitions. [2022-07-13 22:06:15,672 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7628571428571429 [2022-07-13 22:06:15,672 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4806 transitions. [2022-07-13 22:06:15,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4806 transitions. [2022-07-13 22:06:15,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:15,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4806 transitions. [2022-07-13 22:06:15,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.2) internal successors, (4806), 30 states have internal predecessors, (4806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:15,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:15,680 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:15,680 INFO L186 Difference]: Start difference. First operand has 746 places, 514 transitions, 8315 flow. Second operand 30 states and 4806 transitions. [2022-07-13 22:06:15,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 748 places, 577 transitions, 10457 flow [2022-07-13 22:06:16,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 577 transitions, 9852 flow, removed 37 selfloop flow, removed 39 redundant places. [2022-07-13 22:06:16,092 INFO L242 Difference]: Finished difference. Result has 719 places, 489 transitions, 7375 flow [2022-07-13 22:06:16,093 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7781, PETRI_DIFFERENCE_MINUEND_PLACES=680, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7375, PETRI_PLACES=719, PETRI_TRANSITIONS=489} [2022-07-13 22:06:16,093 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 532 predicate places. [2022-07-13 22:06:16,093 INFO L495 AbstractCegarLoop]: Abstraction has has 719 places, 489 transitions, 7375 flow [2022-07-13 22:06:16,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:16,093 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:16,094 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:16,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-07-13 22:06:16,094 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:16,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:16,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1862347804, now seen corresponding path program 59 times [2022-07-13 22:06:16,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:16,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917350706] [2022-07-13 22:06:16,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:16,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:16,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:16,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:16,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917350706] [2022-07-13 22:06:16,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917350706] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:16,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:16,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:16,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907309144] [2022-07-13 22:06:16,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:16,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:16,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:16,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:16,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:16,192 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:16,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 719 places, 489 transitions, 7375 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:16,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:16,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:16,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:17,354 INFO L129 PetriNetUnfolder]: 587/2371 cut-off events. [2022-07-13 22:06:17,354 INFO L130 PetriNetUnfolder]: For 51320/51366 co-relation queries the response was YES. [2022-07-13 22:06:17,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16299 conditions, 2371 events. 587/2371 cut-off events. For 51320/51366 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 18252 event pairs, 304 based on Foata normal form. 12/2322 useless extension candidates. Maximal degree in co-relation 16025. Up to 880 conditions per place. [2022-07-13 22:06:17,428 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 259 selfloop transitions, 62 changer transitions 65/535 dead transitions. [2022-07-13 22:06:17,428 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 535 transitions, 8987 flow [2022-07-13 22:06:17,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-13 22:06:17,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-13 22:06:17,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4480 transitions. [2022-07-13 22:06:17,430 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-07-13 22:06:17,430 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4480 transitions. [2022-07-13 22:06:17,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4480 transitions. [2022-07-13 22:06:17,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:17,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4480 transitions. [2022-07-13 22:06:17,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.0) internal successors, (4480), 28 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:17,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:17,436 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:17,436 INFO L186 Difference]: Start difference. First operand has 719 places, 489 transitions, 7375 flow. Second operand 28 states and 4480 transitions. [2022-07-13 22:06:17,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 535 transitions, 8987 flow [2022-07-13 22:06:17,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 680 places, 535 transitions, 8541 flow, removed 31 selfloop flow, removed 33 redundant places. [2022-07-13 22:06:17,768 INFO L242 Difference]: Finished difference. Result has 687 places, 445 transitions, 6116 flow [2022-07-13 22:06:17,768 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6971, PETRI_DIFFERENCE_MINUEND_PLACES=653, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=6116, PETRI_PLACES=687, PETRI_TRANSITIONS=445} [2022-07-13 22:06:17,768 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 500 predicate places. [2022-07-13 22:06:17,768 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 445 transitions, 6116 flow [2022-07-13 22:06:17,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:17,769 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:17,769 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:17,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-07-13 22:06:17,769 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:17,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:17,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1431857094, now seen corresponding path program 60 times [2022-07-13 22:06:17,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:17,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237304542] [2022-07-13 22:06:17,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:17,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:17,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:17,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:17,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237304542] [2022-07-13 22:06:17,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237304542] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:17,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:17,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:17,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784056729] [2022-07-13 22:06:17,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:17,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:17,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:17,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:17,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:17,874 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:17,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 445 transitions, 6116 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:17,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:17,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:17,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:18,905 INFO L129 PetriNetUnfolder]: 564/2282 cut-off events. [2022-07-13 22:06:18,905 INFO L130 PetriNetUnfolder]: For 46891/46951 co-relation queries the response was YES. [2022-07-13 22:06:18,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15388 conditions, 2282 events. 564/2282 cut-off events. For 46891/46951 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 17402 event pairs, 293 based on Foata normal form. 20/2242 useless extension candidates. Maximal degree in co-relation 15127. Up to 866 conditions per place. [2022-07-13 22:06:18,956 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 223 selfloop transitions, 61 changer transitions 65/498 dead transitions. [2022-07-13 22:06:18,956 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 660 places, 498 transitions, 7799 flow [2022-07-13 22:06:18,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-13 22:06:18,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-13 22:06:18,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4329 transitions. [2022-07-13 22:06:18,958 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7634920634920634 [2022-07-13 22:06:18,958 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4329 transitions. [2022-07-13 22:06:18,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4329 transitions. [2022-07-13 22:06:18,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:18,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4329 transitions. [2022-07-13 22:06:18,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.33333333333334) internal successors, (4329), 27 states have internal predecessors, (4329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:18,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:18,964 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:18,964 INFO L186 Difference]: Start difference. First operand has 687 places, 445 transitions, 6116 flow. Second operand 27 states and 4329 transitions. [2022-07-13 22:06:18,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 660 places, 498 transitions, 7799 flow [2022-07-13 22:06:19,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 631 places, 498 transitions, 7375 flow, removed 31 selfloop flow, removed 29 redundant places. [2022-07-13 22:06:19,234 INFO L242 Difference]: Finished difference. Result has 638 places, 408 transitions, 5076 flow [2022-07-13 22:06:19,234 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5754, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=5076, PETRI_PLACES=638, PETRI_TRANSITIONS=408} [2022-07-13 22:06:19,234 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 451 predicate places. [2022-07-13 22:06:19,234 INFO L495 AbstractCegarLoop]: Abstraction has has 638 places, 408 transitions, 5076 flow [2022-07-13 22:06:19,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:19,235 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:19,235 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:19,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-07-13 22:06:19,235 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:19,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:19,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2140134238, now seen corresponding path program 61 times [2022-07-13 22:06:19,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:19,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205334000] [2022-07-13 22:06:19,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:19,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:19,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:19,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:19,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205334000] [2022-07-13 22:06:19,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205334000] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:19,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:19,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:19,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563644037] [2022-07-13 22:06:19,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:19,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:19,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:19,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:19,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:19,342 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:19,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 408 transitions, 5076 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:19,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:19,351 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:19,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:20,265 INFO L129 PetriNetUnfolder]: 548/2224 cut-off events. [2022-07-13 22:06:20,265 INFO L130 PetriNetUnfolder]: For 43054/43100 co-relation queries the response was YES. [2022-07-13 22:06:20,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14685 conditions, 2224 events. 548/2224 cut-off events. For 43054/43100 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 16719 event pairs, 299 based on Foata normal form. 12/2176 useless extension candidates. Maximal degree in co-relation 14433. Up to 856 conditions per place. [2022-07-13 22:06:20,311 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 204 selfloop transitions, 55 changer transitions 64/472 dead transitions. [2022-07-13 22:06:20,311 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 472 transitions, 6915 flow [2022-07-13 22:06:20,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-13 22:06:20,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-13 22:06:20,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4484 transitions. [2022-07-13 22:06:20,313 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7625850340136054 [2022-07-13 22:06:20,314 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4484 transitions. [2022-07-13 22:06:20,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4484 transitions. [2022-07-13 22:06:20,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:20,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4484 transitions. [2022-07-13 22:06:20,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.14285714285714) internal successors, (4484), 28 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:20,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:20,319 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:20,319 INFO L186 Difference]: Start difference. First operand has 638 places, 408 transitions, 5076 flow. Second operand 28 states and 4484 transitions. [2022-07-13 22:06:20,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 472 transitions, 6915 flow [2022-07-13 22:06:20,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 472 transitions, 6405 flow, removed 31 selfloop flow, removed 35 redundant places. [2022-07-13 22:06:20,572 INFO L242 Difference]: Finished difference. Result has 598 places, 383 transitions, 4280 flow [2022-07-13 22:06:20,572 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4678, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4280, PETRI_PLACES=598, PETRI_TRANSITIONS=383} [2022-07-13 22:06:20,572 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 411 predicate places. [2022-07-13 22:06:20,572 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 383 transitions, 4280 flow [2022-07-13 22:06:20,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:20,573 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:20,573 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:20,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-07-13 22:06:20,573 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:20,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:20,574 INFO L85 PathProgramCache]: Analyzing trace with hash -750577990, now seen corresponding path program 62 times [2022-07-13 22:06:20,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:20,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547414880] [2022-07-13 22:06:20,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:20,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:20,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:20,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547414880] [2022-07-13 22:06:20,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547414880] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:20,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:20,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:20,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547204074] [2022-07-13 22:06:20,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:20,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:20,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:20,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:20,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:20,684 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:20,685 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 383 transitions, 4280 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:20,685 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:20,685 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:20,685 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:21,639 INFO L129 PetriNetUnfolder]: 520/2093 cut-off events. [2022-07-13 22:06:21,639 INFO L130 PetriNetUnfolder]: For 37776/37836 co-relation queries the response was YES. [2022-07-13 22:06:21,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13512 conditions, 2093 events. 520/2093 cut-off events. For 37776/37836 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 15293 event pairs, 286 based on Foata normal form. 20/2055 useless extension candidates. Maximal degree in co-relation 13269. Up to 838 conditions per place. [2022-07-13 22:06:21,689 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 177 selfloop transitions, 28 changer transitions 68/422 dead transitions. [2022-07-13 22:06:21,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 422 transitions, 5445 flow [2022-07-13 22:06:21,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:06:21,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:06:21,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4775 transitions. [2022-07-13 22:06:21,691 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7579365079365079 [2022-07-13 22:06:21,692 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4775 transitions. [2022-07-13 22:06:21,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4775 transitions. [2022-07-13 22:06:21,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:21,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4775 transitions. [2022-07-13 22:06:21,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.16666666666666) internal successors, (4775), 30 states have internal predecessors, (4775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:21,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:21,697 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:21,697 INFO L186 Difference]: Start difference. First operand has 598 places, 383 transitions, 4280 flow. Second operand 30 states and 4775 transitions. [2022-07-13 22:06:21,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 422 transitions, 5445 flow [2022-07-13 22:06:21,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 422 transitions, 5147 flow, removed 27 selfloop flow, removed 32 redundant places. [2022-07-13 22:06:21,919 INFO L242 Difference]: Finished difference. Result has 567 places, 330 transitions, 3101 flow [2022-07-13 22:06:21,919 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4008, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3101, PETRI_PLACES=567, PETRI_TRANSITIONS=330} [2022-07-13 22:06:21,919 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 380 predicate places. [2022-07-13 22:06:21,919 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 330 transitions, 3101 flow [2022-07-13 22:06:21,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:21,920 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:21,920 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:21,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-07-13 22:06:21,920 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:21,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:21,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1515138178, now seen corresponding path program 63 times [2022-07-13 22:06:21,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:21,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024694620] [2022-07-13 22:06:21,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:21,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:22,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:22,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:22,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024694620] [2022-07-13 22:06:22,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024694620] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:22,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:22,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:22,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007902494] [2022-07-13 22:06:22,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:22,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:22,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:22,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:22,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:22,035 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:22,035 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 330 transitions, 3101 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:22,035 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:22,035 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:22,035 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:23,260 INFO L129 PetriNetUnfolder]: 557/2224 cut-off events. [2022-07-13 22:06:23,260 INFO L130 PetriNetUnfolder]: For 40461/40506 co-relation queries the response was YES. [2022-07-13 22:06:23,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14408 conditions, 2224 events. 557/2224 cut-off events. For 40461/40506 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 16654 event pairs, 304 based on Foata normal form. 13/2177 useless extension candidates. Maximal degree in co-relation 14177. Up to 839 conditions per place. [2022-07-13 22:06:23,316 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 203 selfloop transitions, 50 changer transitions 74/476 dead transitions. [2022-07-13 22:06:23,317 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 476 transitions, 6617 flow [2022-07-13 22:06:23,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-13 22:06:23,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-07-13 22:06:23,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7335 transitions. [2022-07-13 22:06:23,321 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7593167701863354 [2022-07-13 22:06:23,321 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7335 transitions. [2022-07-13 22:06:23,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7335 transitions. [2022-07-13 22:06:23,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:23,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7335 transitions. [2022-07-13 22:06:23,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.45652173913044) internal successors, (7335), 46 states have internal predecessors, (7335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:23,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:23,334 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:23,334 INFO L186 Difference]: Start difference. First operand has 567 places, 330 transitions, 3101 flow. Second operand 46 states and 7335 transitions. [2022-07-13 22:06:23,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 476 transitions, 6617 flow [2022-07-13 22:06:23,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 476 transitions, 6048 flow, removed 91 selfloop flow, removed 34 redundant places. [2022-07-13 22:06:23,530 INFO L242 Difference]: Finished difference. Result has 541 places, 350 transitions, 3471 flow [2022-07-13 22:06:23,530 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2837, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=3471, PETRI_PLACES=541, PETRI_TRANSITIONS=350} [2022-07-13 22:06:23,530 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 354 predicate places. [2022-07-13 22:06:23,530 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 350 transitions, 3471 flow [2022-07-13 22:06:23,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:23,531 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:23,531 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:23,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-07-13 22:06:23,531 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:23,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:23,531 INFO L85 PathProgramCache]: Analyzing trace with hash -561155850, now seen corresponding path program 64 times [2022-07-13 22:06:23,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:23,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972430220] [2022-07-13 22:06:23,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:23,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:23,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:23,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:23,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972430220] [2022-07-13 22:06:23,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972430220] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:23,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:23,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:23,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407582220] [2022-07-13 22:06:23,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:23,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:23,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:23,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:23,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:23,655 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:23,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 350 transitions, 3471 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:23,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:23,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:23,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:24,812 INFO L129 PetriNetUnfolder]: 599/2330 cut-off events. [2022-07-13 22:06:24,812 INFO L130 PetriNetUnfolder]: For 46219/46270 co-relation queries the response was YES. [2022-07-13 22:06:24,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15703 conditions, 2330 events. 599/2330 cut-off events. For 46219/46270 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 17648 event pairs, 339 based on Foata normal form. 13/2283 useless extension candidates. Maximal degree in co-relation 15466. Up to 838 conditions per place. [2022-07-13 22:06:24,857 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 207 selfloop transitions, 63 changer transitions 74/493 dead transitions. [2022-07-13 22:06:24,858 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 493 transitions, 7228 flow [2022-07-13 22:06:24,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-13 22:06:24,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-07-13 22:06:24,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6865 transitions. [2022-07-13 22:06:24,861 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7602436323366556 [2022-07-13 22:06:24,861 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6865 transitions. [2022-07-13 22:06:24,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6865 transitions. [2022-07-13 22:06:24,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:24,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6865 transitions. [2022-07-13 22:06:24,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 159.65116279069767) internal successors, (6865), 43 states have internal predecessors, (6865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:24,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:24,869 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:24,869 INFO L186 Difference]: Start difference. First operand has 541 places, 350 transitions, 3471 flow. Second operand 43 states and 6865 transitions. [2022-07-13 22:06:24,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 493 transitions, 7228 flow [2022-07-13 22:06:25,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 493 transitions, 6497 flow, removed 354 selfloop flow, removed 25 redundant places. [2022-07-13 22:06:25,066 INFO L242 Difference]: Finished difference. Result has 561 places, 371 transitions, 3943 flow [2022-07-13 22:06:25,066 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3259, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=3943, PETRI_PLACES=561, PETRI_TRANSITIONS=371} [2022-07-13 22:06:25,066 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 374 predicate places. [2022-07-13 22:06:25,066 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 371 transitions, 3943 flow [2022-07-13 22:06:25,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:25,067 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:25,067 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:25,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-07-13 22:06:25,067 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:25,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:25,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1744965522, now seen corresponding path program 65 times [2022-07-13 22:06:25,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:25,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102717723] [2022-07-13 22:06:25,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:25,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:25,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:25,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:25,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102717723] [2022-07-13 22:06:25,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102717723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:25,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:25,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:25,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447040058] [2022-07-13 22:06:25,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:25,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:25,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:25,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:25,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:25,171 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:25,171 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 371 transitions, 3943 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:25,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:25,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:25,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:26,426 INFO L129 PetriNetUnfolder]: 633/2407 cut-off events. [2022-07-13 22:06:26,427 INFO L130 PetriNetUnfolder]: For 54194/54258 co-relation queries the response was YES. [2022-07-13 22:06:26,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17065 conditions, 2407 events. 633/2407 cut-off events. For 54194/54258 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 18446 event pairs, 319 based on Foata normal form. 17/2360 useless extension candidates. Maximal degree in co-relation 16816. Up to 838 conditions per place. [2022-07-13 22:06:26,485 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 222 selfloop transitions, 70 changer transitions 74/515 dead transitions. [2022-07-13 22:06:26,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 515 transitions, 8018 flow [2022-07-13 22:06:26,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-13 22:06:26,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-07-13 22:06:26,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7181 transitions. [2022-07-13 22:06:26,488 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7598941798941798 [2022-07-13 22:06:26,489 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7181 transitions. [2022-07-13 22:06:26,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7181 transitions. [2022-07-13 22:06:26,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:26,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7181 transitions. [2022-07-13 22:06:26,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.57777777777778) internal successors, (7181), 45 states have internal predecessors, (7181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:26,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:26,497 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:26,498 INFO L186 Difference]: Start difference. First operand has 561 places, 371 transitions, 3943 flow. Second operand 45 states and 7181 transitions. [2022-07-13 22:06:26,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 515 transitions, 8018 flow [2022-07-13 22:06:26,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 515 transitions, 7439 flow, removed 256 selfloop flow, removed 23 redundant places. [2022-07-13 22:06:26,764 INFO L242 Difference]: Finished difference. Result has 587 places, 390 transitions, 4485 flow [2022-07-13 22:06:26,765 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3782, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=4485, PETRI_PLACES=587, PETRI_TRANSITIONS=390} [2022-07-13 22:06:26,765 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 400 predicate places. [2022-07-13 22:06:26,765 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 390 transitions, 4485 flow [2022-07-13 22:06:26,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:26,765 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:26,765 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:26,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-07-13 22:06:26,766 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:26,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:26,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1876051868, now seen corresponding path program 66 times [2022-07-13 22:06:26,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:26,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727596316] [2022-07-13 22:06:26,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:26,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:26,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:26,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:26,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727596316] [2022-07-13 22:06:26,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727596316] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:26,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:26,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:26,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214887730] [2022-07-13 22:06:26,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:26,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:26,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:26,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:26,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:26,874 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:26,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 390 transitions, 4485 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:26,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:26,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:26,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:28,189 INFO L129 PetriNetUnfolder]: 628/2419 cut-off events. [2022-07-13 22:06:28,189 INFO L130 PetriNetUnfolder]: For 56443/56494 co-relation queries the response was YES. [2022-07-13 22:06:28,236 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17291 conditions, 2419 events. 628/2419 cut-off events. For 56443/56494 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 18564 event pairs, 347 based on Foata normal form. 14/2371 useless extension candidates. Maximal degree in co-relation 17028. Up to 838 conditions per place. [2022-07-13 22:06:28,243 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 226 selfloop transitions, 73 changer transitions 76/524 dead transitions. [2022-07-13 22:06:28,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 524 transitions, 8587 flow [2022-07-13 22:06:28,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-13 22:06:28,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-07-13 22:06:28,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7026 transitions. [2022-07-13 22:06:28,247 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7603896103896104 [2022-07-13 22:06:28,247 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7026 transitions. [2022-07-13 22:06:28,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7026 transitions. [2022-07-13 22:06:28,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:28,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7026 transitions. [2022-07-13 22:06:28,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.6818181818182) internal successors, (7026), 44 states have internal predecessors, (7026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:28,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:28,332 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:28,332 INFO L186 Difference]: Start difference. First operand has 587 places, 390 transitions, 4485 flow. Second operand 44 states and 7026 transitions. [2022-07-13 22:06:28,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 524 transitions, 8587 flow [2022-07-13 22:06:28,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 524 transitions, 7940 flow, removed 312 selfloop flow, removed 32 redundant places. [2022-07-13 22:06:28,607 INFO L242 Difference]: Finished difference. Result has 601 places, 399 transitions, 4870 flow [2022-07-13 22:06:28,607 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4331, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4870, PETRI_PLACES=601, PETRI_TRANSITIONS=399} [2022-07-13 22:06:28,607 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 414 predicate places. [2022-07-13 22:06:28,607 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 399 transitions, 4870 flow [2022-07-13 22:06:28,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:28,608 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:28,608 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:28,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-07-13 22:06:28,608 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:28,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:28,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1064240502, now seen corresponding path program 67 times [2022-07-13 22:06:28,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:28,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175254162] [2022-07-13 22:06:28,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:28,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:28,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:28,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175254162] [2022-07-13 22:06:28,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175254162] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:28,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:28,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:28,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762664648] [2022-07-13 22:06:28,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:28,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:28,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:28,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:28,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:28,717 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:28,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 399 transitions, 4870 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:28,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:28,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:28,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:29,914 INFO L129 PetriNetUnfolder]: 621/2373 cut-off events. [2022-07-13 22:06:29,914 INFO L130 PetriNetUnfolder]: For 55673/55724 co-relation queries the response was YES. [2022-07-13 22:06:29,976 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17007 conditions, 2373 events. 621/2373 cut-off events. For 55673/55724 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 18064 event pairs, 315 based on Foata normal form. 14/2324 useless extension candidates. Maximal degree in co-relation 16740. Up to 838 conditions per place. [2022-07-13 22:06:29,984 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 220 selfloop transitions, 78 changer transitions 66/513 dead transitions. [2022-07-13 22:06:29,985 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 513 transitions, 8375 flow [2022-07-13 22:06:29,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-13 22:06:29,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-13 22:06:29,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6075 transitions. [2022-07-13 22:06:29,988 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7612781954887218 [2022-07-13 22:06:29,988 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6075 transitions. [2022-07-13 22:06:29,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6075 transitions. [2022-07-13 22:06:29,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:29,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6075 transitions. [2022-07-13 22:06:29,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.8684210526316) internal successors, (6075), 38 states have internal predecessors, (6075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:29,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:29,996 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:29,996 INFO L186 Difference]: Start difference. First operand has 601 places, 399 transitions, 4870 flow. Second operand 38 states and 6075 transitions. [2022-07-13 22:06:29,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 513 transitions, 8375 flow [2022-07-13 22:06:30,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 513 transitions, 7713 flow, removed 279 selfloop flow, removed 29 redundant places. [2022-07-13 22:06:30,302 INFO L242 Difference]: Finished difference. Result has 599 places, 412 transitions, 5226 flow [2022-07-13 22:06:30,302 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4618, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5226, PETRI_PLACES=599, PETRI_TRANSITIONS=412} [2022-07-13 22:06:30,302 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 412 predicate places. [2022-07-13 22:06:30,302 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 412 transitions, 5226 flow [2022-07-13 22:06:30,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:30,302 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:30,303 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:30,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-07-13 22:06:30,303 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:30,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:30,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1124453936, now seen corresponding path program 68 times [2022-07-13 22:06:30,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:30,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416483202] [2022-07-13 22:06:30,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:30,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:30,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:30,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:30,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416483202] [2022-07-13 22:06:30,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416483202] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:30,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:30,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:30,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332442627] [2022-07-13 22:06:30,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:30,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:30,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:30,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:30,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:30,406 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:30,407 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 412 transitions, 5226 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:30,407 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:30,407 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:30,407 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:31,559 INFO L129 PetriNetUnfolder]: 649/2478 cut-off events. [2022-07-13 22:06:31,560 INFO L130 PetriNetUnfolder]: For 58276/58315 co-relation queries the response was YES. [2022-07-13 22:06:31,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18020 conditions, 2478 events. 649/2478 cut-off events. For 58276/58315 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 19068 event pairs, 341 based on Foata normal form. 11/2428 useless extension candidates. Maximal degree in co-relation 17760. Up to 838 conditions per place. [2022-07-13 22:06:31,615 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 228 selfloop transitions, 98 changer transitions 67/542 dead transitions. [2022-07-13 22:06:31,615 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 542 transitions, 9108 flow [2022-07-13 22:06:31,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 22:06:31,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-13 22:06:31,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5605 transitions. [2022-07-13 22:06:31,618 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7625850340136054 [2022-07-13 22:06:31,618 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5605 transitions. [2022-07-13 22:06:31,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5605 transitions. [2022-07-13 22:06:31,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:31,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5605 transitions. [2022-07-13 22:06:31,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.14285714285714) internal successors, (5605), 35 states have internal predecessors, (5605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:31,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:31,625 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:31,625 INFO L186 Difference]: Start difference. First operand has 599 places, 412 transitions, 5226 flow. Second operand 35 states and 5605 transitions. [2022-07-13 22:06:31,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 542 transitions, 9108 flow [2022-07-13 22:06:31,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 542 transitions, 8285 flow, removed 358 selfloop flow, removed 20 redundant places. [2022-07-13 22:06:31,934 INFO L242 Difference]: Finished difference. Result has 615 places, 431 transitions, 5577 flow [2022-07-13 22:06:31,934 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4842, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5577, PETRI_PLACES=615, PETRI_TRANSITIONS=431} [2022-07-13 22:06:31,935 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 428 predicate places. [2022-07-13 22:06:31,935 INFO L495 AbstractCegarLoop]: Abstraction has has 615 places, 431 transitions, 5577 flow [2022-07-13 22:06:31,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:31,935 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:31,935 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:31,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-07-13 22:06:31,935 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:31,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:31,935 INFO L85 PathProgramCache]: Analyzing trace with hash -575901748, now seen corresponding path program 69 times [2022-07-13 22:06:31,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:31,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314693740] [2022-07-13 22:06:31,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:31,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:32,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:32,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:32,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314693740] [2022-07-13 22:06:32,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314693740] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:32,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:32,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:32,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996982188] [2022-07-13 22:06:32,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:32,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:32,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:32,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:32,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:32,059 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:32,059 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 431 transitions, 5577 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:32,059 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:32,060 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:32,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:33,352 INFO L129 PetriNetUnfolder]: 668/2496 cut-off events. [2022-07-13 22:06:33,352 INFO L130 PetriNetUnfolder]: For 59158/59226 co-relation queries the response was YES. [2022-07-13 22:06:33,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18309 conditions, 2496 events. 668/2496 cut-off events. For 59158/59226 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 19259 event pairs, 346 based on Foata normal form. 16/2451 useless extension candidates. Maximal degree in co-relation 18040. Up to 838 conditions per place. [2022-07-13 22:06:33,405 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 252 selfloop transitions, 89 changer transitions 65/555 dead transitions. [2022-07-13 22:06:33,405 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 555 transitions, 9318 flow [2022-07-13 22:06:33,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-13 22:06:33,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-13 22:06:33,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6083 transitions. [2022-07-13 22:06:33,408 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.762280701754386 [2022-07-13 22:06:33,408 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6083 transitions. [2022-07-13 22:06:33,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6083 transitions. [2022-07-13 22:06:33,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:33,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6083 transitions. [2022-07-13 22:06:33,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.07894736842104) internal successors, (6083), 38 states have internal predecessors, (6083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:33,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:33,415 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:33,415 INFO L186 Difference]: Start difference. First operand has 615 places, 431 transitions, 5577 flow. Second operand 38 states and 6083 transitions. [2022-07-13 22:06:33,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 555 transitions, 9318 flow [2022-07-13 22:06:33,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 555 transitions, 8875 flow, removed 125 selfloop flow, removed 19 redundant places. [2022-07-13 22:06:33,724 INFO L242 Difference]: Finished difference. Result has 637 places, 446 transitions, 5974 flow [2022-07-13 22:06:33,724 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5327, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5974, PETRI_PLACES=637, PETRI_TRANSITIONS=446} [2022-07-13 22:06:33,724 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 450 predicate places. [2022-07-13 22:06:33,725 INFO L495 AbstractCegarLoop]: Abstraction has has 637 places, 446 transitions, 5974 flow [2022-07-13 22:06:33,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:33,725 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:33,725 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:33,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-07-13 22:06:33,725 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:33,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:33,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1037904126, now seen corresponding path program 70 times [2022-07-13 22:06:33,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:33,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186240456] [2022-07-13 22:06:33,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:33,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:33,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:33,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186240456] [2022-07-13 22:06:33,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186240456] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:33,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:33,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:33,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557043163] [2022-07-13 22:06:33,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:33,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:33,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:33,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:33,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:33,834 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:33,835 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 637 places, 446 transitions, 5974 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:33,835 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:33,835 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:33,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:35,103 INFO L129 PetriNetUnfolder]: 708/2626 cut-off events. [2022-07-13 22:06:35,103 INFO L130 PetriNetUnfolder]: For 70313/70373 co-relation queries the response was YES. [2022-07-13 22:06:35,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20074 conditions, 2626 events. 708/2626 cut-off events. For 70313/70373 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 20594 event pairs, 361 based on Foata normal form. 14/2577 useless extension candidates. Maximal degree in co-relation 19795. Up to 838 conditions per place. [2022-07-13 22:06:35,179 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 255 selfloop transitions, 101 changer transitions 64/569 dead transitions. [2022-07-13 22:06:35,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 649 places, 569 transitions, 9888 flow [2022-07-13 22:06:35,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-13 22:06:35,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-13 22:06:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5925 transitions. [2022-07-13 22:06:35,182 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7625482625482626 [2022-07-13 22:06:35,182 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5925 transitions. [2022-07-13 22:06:35,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5925 transitions. [2022-07-13 22:06:35,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:35,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5925 transitions. [2022-07-13 22:06:35,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.13513513513513) internal successors, (5925), 37 states have internal predecessors, (5925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:35,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:35,189 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:35,190 INFO L186 Difference]: Start difference. First operand has 637 places, 446 transitions, 5974 flow. Second operand 37 states and 5925 transitions. [2022-07-13 22:06:35,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 649 places, 569 transitions, 9888 flow [2022-07-13 22:06:35,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 627 places, 569 transitions, 9422 flow, removed 179 selfloop flow, removed 22 redundant places. [2022-07-13 22:06:35,566 INFO L242 Difference]: Finished difference. Result has 653 places, 466 transitions, 6604 flow [2022-07-13 22:06:35,566 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5766, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=6604, PETRI_PLACES=653, PETRI_TRANSITIONS=466} [2022-07-13 22:06:35,566 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 466 predicate places. [2022-07-13 22:06:35,566 INFO L495 AbstractCegarLoop]: Abstraction has has 653 places, 466 transitions, 6604 flow [2022-07-13 22:06:35,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:35,567 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:35,567 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:35,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-07-13 22:06:35,567 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:35,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:35,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1427437878, now seen corresponding path program 71 times [2022-07-13 22:06:35,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:35,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839385501] [2022-07-13 22:06:35,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:35,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:35,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:35,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:35,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839385501] [2022-07-13 22:06:35,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839385501] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:35,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:35,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:35,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194987560] [2022-07-13 22:06:35,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:35,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:35,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:35,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:35,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:35,666 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:35,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 653 places, 466 transitions, 6604 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:35,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:35,667 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:35,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:37,047 INFO L129 PetriNetUnfolder]: 726/2662 cut-off events. [2022-07-13 22:06:37,047 INFO L130 PetriNetUnfolder]: For 78494/78562 co-relation queries the response was YES. [2022-07-13 22:06:37,092 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20891 conditions, 2662 events. 726/2662 cut-off events. For 78494/78562 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 21046 event pairs, 340 based on Foata normal form. 16/2612 useless extension candidates. Maximal degree in co-relation 20605. Up to 838 conditions per place. [2022-07-13 22:06:37,101 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 266 selfloop transitions, 106 changer transitions 66/587 dead transitions. [2022-07-13 22:06:37,101 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 666 places, 587 transitions, 10636 flow [2022-07-13 22:06:37,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-13 22:06:37,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-13 22:06:37,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5921 transitions. [2022-07-13 22:06:37,104 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.762033462033462 [2022-07-13 22:06:37,104 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5921 transitions. [2022-07-13 22:06:37,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5921 transitions. [2022-07-13 22:06:37,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:37,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5921 transitions. [2022-07-13 22:06:37,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.02702702702703) internal successors, (5921), 37 states have internal predecessors, (5921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:37,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:37,111 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:37,111 INFO L186 Difference]: Start difference. First operand has 653 places, 466 transitions, 6604 flow. Second operand 37 states and 5921 transitions. [2022-07-13 22:06:37,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 666 places, 587 transitions, 10636 flow [2022-07-13 22:06:37,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 645 places, 587 transitions, 10153 flow, removed 182 selfloop flow, removed 21 redundant places. [2022-07-13 22:06:37,537 INFO L242 Difference]: Finished difference. Result has 670 places, 485 transitions, 7206 flow [2022-07-13 22:06:37,538 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6361, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7206, PETRI_PLACES=670, PETRI_TRANSITIONS=485} [2022-07-13 22:06:37,538 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 483 predicate places. [2022-07-13 22:06:37,538 INFO L495 AbstractCegarLoop]: Abstraction has has 670 places, 485 transitions, 7206 flow [2022-07-13 22:06:37,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:37,539 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:37,539 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:37,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-07-13 22:06:37,539 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:37,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:37,539 INFO L85 PathProgramCache]: Analyzing trace with hash -189568654, now seen corresponding path program 72 times [2022-07-13 22:06:37,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:37,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876257479] [2022-07-13 22:06:37,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:37,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:37,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:37,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:37,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876257479] [2022-07-13 22:06:37,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876257479] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:37,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:37,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:37,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140483018] [2022-07-13 22:06:37,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:37,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:37,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:37,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:37,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:37,640 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:37,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 670 places, 485 transitions, 7206 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:37,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:37,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:37,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:39,063 INFO L129 PetriNetUnfolder]: 755/2751 cut-off events. [2022-07-13 22:06:39,064 INFO L130 PetriNetUnfolder]: For 88350/88418 co-relation queries the response was YES. [2022-07-13 22:06:39,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22330 conditions, 2751 events. 755/2751 cut-off events. For 88350/88418 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 21827 event pairs, 382 based on Foata normal form. 16/2706 useless extension candidates. Maximal degree in co-relation 22037. Up to 838 conditions per place. [2022-07-13 22:06:39,134 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 274 selfloop transitions, 122 changer transitions 67/612 dead transitions. [2022-07-13 22:06:39,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 612 transitions, 11599 flow [2022-07-13 22:06:39,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-13 22:06:39,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-13 22:06:39,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5766 transitions. [2022-07-13 22:06:39,137 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7626984126984127 [2022-07-13 22:06:39,137 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5766 transitions. [2022-07-13 22:06:39,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5766 transitions. [2022-07-13 22:06:39,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:39,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5766 transitions. [2022-07-13 22:06:39,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.16666666666666) internal successors, (5766), 36 states have internal predecessors, (5766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:39,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:39,144 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:39,144 INFO L186 Difference]: Start difference. First operand has 670 places, 485 transitions, 7206 flow. Second operand 36 states and 5766 transitions. [2022-07-13 22:06:39,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 682 places, 612 transitions, 11599 flow [2022-07-13 22:06:39,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 612 transitions, 11110 flow, removed 190 selfloop flow, removed 20 redundant places. [2022-07-13 22:06:39,642 INFO L242 Difference]: Finished difference. Result has 688 places, 507 transitions, 8000 flow [2022-07-13 22:06:39,642 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6956, PETRI_DIFFERENCE_MINUEND_PLACES=627, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=8000, PETRI_PLACES=688, PETRI_TRANSITIONS=507} [2022-07-13 22:06:39,642 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 501 predicate places. [2022-07-13 22:06:39,642 INFO L495 AbstractCegarLoop]: Abstraction has has 688 places, 507 transitions, 8000 flow [2022-07-13 22:06:39,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:39,643 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:39,643 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:39,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-07-13 22:06:39,643 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:39,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:39,643 INFO L85 PathProgramCache]: Analyzing trace with hash 998465354, now seen corresponding path program 73 times [2022-07-13 22:06:39,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:39,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570172786] [2022-07-13 22:06:39,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:39,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:39,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:39,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:39,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570172786] [2022-07-13 22:06:39,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570172786] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:39,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:39,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:39,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776978524] [2022-07-13 22:06:39,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:39,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:39,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:39,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:39,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:39,761 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:39,762 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 688 places, 507 transitions, 8000 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:39,762 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:39,762 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:39,762 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:41,226 INFO L129 PetriNetUnfolder]: 755/2826 cut-off events. [2022-07-13 22:06:41,226 INFO L130 PetriNetUnfolder]: For 95520/95563 co-relation queries the response was YES. [2022-07-13 22:06:41,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23165 conditions, 2826 events. 755/2826 cut-off events. For 95520/95563 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 22793 event pairs, 395 based on Foata normal form. 12/2777 useless extension candidates. Maximal degree in co-relation 22863. Up to 838 conditions per place. [2022-07-13 22:06:41,292 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 294 selfloop transitions, 115 changer transitions 65/623 dead transitions. [2022-07-13 22:06:41,293 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 701 places, 623 transitions, 12189 flow [2022-07-13 22:06:41,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-13 22:06:41,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-13 22:06:41,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5770 transitions. [2022-07-13 22:06:41,295 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7632275132275133 [2022-07-13 22:06:41,295 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5770 transitions. [2022-07-13 22:06:41,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5770 transitions. [2022-07-13 22:06:41,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:41,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5770 transitions. [2022-07-13 22:06:41,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.27777777777777) internal successors, (5770), 36 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:41,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:41,303 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:41,303 INFO L186 Difference]: Start difference. First operand has 688 places, 507 transitions, 8000 flow. Second operand 36 states and 5770 transitions. [2022-07-13 22:06:41,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 701 places, 623 transitions, 12189 flow [2022-07-13 22:06:41,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 681 places, 623 transitions, 11682 flow, removed 194 selfloop flow, removed 20 redundant places. [2022-07-13 22:06:41,897 INFO L242 Difference]: Finished difference. Result has 707 places, 524 transitions, 8600 flow [2022-07-13 22:06:41,897 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7718, PETRI_DIFFERENCE_MINUEND_PLACES=646, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=8600, PETRI_PLACES=707, PETRI_TRANSITIONS=524} [2022-07-13 22:06:41,898 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 520 predicate places. [2022-07-13 22:06:41,898 INFO L495 AbstractCegarLoop]: Abstraction has has 707 places, 524 transitions, 8600 flow [2022-07-13 22:06:41,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:41,898 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:41,898 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:41,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-07-13 22:06:41,898 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:41,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:41,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1501436528, now seen corresponding path program 74 times [2022-07-13 22:06:41,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:41,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113791721] [2022-07-13 22:06:41,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:41,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:41,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:42,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:42,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113791721] [2022-07-13 22:06:42,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113791721] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:42,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:42,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:42,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063716400] [2022-07-13 22:06:42,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:42,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:42,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:42,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:42,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:42,002 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:42,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 707 places, 524 transitions, 8600 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:42,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:42,003 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:42,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:43,451 INFO L129 PetriNetUnfolder]: 751/2780 cut-off events. [2022-07-13 22:06:43,451 INFO L130 PetriNetUnfolder]: For 98127/98191 co-relation queries the response was YES. [2022-07-13 22:06:43,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22894 conditions, 2780 events. 751/2780 cut-off events. For 98127/98191 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 22325 event pairs, 370 based on Foata normal form. 15/2733 useless extension candidates. Maximal degree in co-relation 22583. Up to 838 conditions per place. [2022-07-13 22:06:43,524 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 306 selfloop transitions, 114 changer transitions 66/635 dead transitions. [2022-07-13 22:06:43,524 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 721 places, 635 transitions, 12794 flow [2022-07-13 22:06:43,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-13 22:06:43,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-13 22:06:43,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5929 transitions. [2022-07-13 22:06:43,527 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.763063063063063 [2022-07-13 22:06:43,527 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5929 transitions. [2022-07-13 22:06:43,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5929 transitions. [2022-07-13 22:06:43,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:43,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5929 transitions. [2022-07-13 22:06:43,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.24324324324326) internal successors, (5929), 37 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:43,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:43,535 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:43,535 INFO L186 Difference]: Start difference. First operand has 707 places, 524 transitions, 8600 flow. Second operand 37 states and 5929 transitions. [2022-07-13 22:06:43,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 721 places, 635 transitions, 12794 flow [2022-07-13 22:06:44,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 701 places, 635 transitions, 12256 flow, removed 207 selfloop flow, removed 20 redundant places. [2022-07-13 22:06:44,096 INFO L242 Difference]: Finished difference. Result has 726 places, 533 transitions, 8915 flow [2022-07-13 22:06:44,096 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8304, PETRI_DIFFERENCE_MINUEND_PLACES=665, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=8915, PETRI_PLACES=726, PETRI_TRANSITIONS=533} [2022-07-13 22:06:44,096 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 539 predicate places. [2022-07-13 22:06:44,096 INFO L495 AbstractCegarLoop]: Abstraction has has 726 places, 533 transitions, 8915 flow [2022-07-13 22:06:44,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:44,096 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:44,097 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:44,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-07-13 22:06:44,097 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:44,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:44,097 INFO L85 PathProgramCache]: Analyzing trace with hash 982329360, now seen corresponding path program 75 times [2022-07-13 22:06:44,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:44,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233523482] [2022-07-13 22:06:44,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:44,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:44,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:44,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:44,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233523482] [2022-07-13 22:06:44,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233523482] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:44,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:44,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:44,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265548039] [2022-07-13 22:06:44,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:44,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:44,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:44,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:44,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:44,205 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:44,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 726 places, 533 transitions, 8915 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:44,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:44,206 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:44,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:45,719 INFO L129 PetriNetUnfolder]: 744/2794 cut-off events. [2022-07-13 22:06:45,719 INFO L130 PetriNetUnfolder]: For 100638/100681 co-relation queries the response was YES. [2022-07-13 22:06:45,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22744 conditions, 2794 events. 744/2794 cut-off events. For 100638/100681 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 22533 event pairs, 345 based on Foata normal form. 12/2740 useless extension candidates. Maximal degree in co-relation 22425. Up to 838 conditions per place. [2022-07-13 22:06:45,790 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 310 selfloop transitions, 117 changer transitions 66/642 dead transitions. [2022-07-13 22:06:45,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 740 places, 642 transitions, 13135 flow [2022-07-13 22:06:45,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-13 22:06:45,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-13 22:06:45,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6081 transitions. [2022-07-13 22:06:45,794 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.76203007518797 [2022-07-13 22:06:45,794 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6081 transitions. [2022-07-13 22:06:45,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6081 transitions. [2022-07-13 22:06:45,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:45,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6081 transitions. [2022-07-13 22:06:45,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.02631578947367) internal successors, (6081), 38 states have internal predecessors, (6081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:45,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:45,803 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:45,804 INFO L186 Difference]: Start difference. First operand has 726 places, 533 transitions, 8915 flow. Second operand 38 states and 6081 transitions. [2022-07-13 22:06:45,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 740 places, 642 transitions, 13135 flow [2022-07-13 22:06:46,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 718 places, 642 transitions, 12579 flow, removed 208 selfloop flow, removed 22 redundant places. [2022-07-13 22:06:46,473 INFO L242 Difference]: Finished difference. Result has 742 places, 540 transitions, 9131 flow [2022-07-13 22:06:46,473 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8603, PETRI_DIFFERENCE_MINUEND_PLACES=681, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9131, PETRI_PLACES=742, PETRI_TRANSITIONS=540} [2022-07-13 22:06:46,473 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 555 predicate places. [2022-07-13 22:06:46,473 INFO L495 AbstractCegarLoop]: Abstraction has has 742 places, 540 transitions, 9131 flow [2022-07-13 22:06:46,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:46,474 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:46,474 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:46,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-07-13 22:06:46,474 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:46,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:46,474 INFO L85 PathProgramCache]: Analyzing trace with hash 784382108, now seen corresponding path program 76 times [2022-07-13 22:06:46,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:46,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197188599] [2022-07-13 22:06:46,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:46,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:46,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:46,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:46,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197188599] [2022-07-13 22:06:46,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197188599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:46,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:46,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:46,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992777469] [2022-07-13 22:06:46,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:46,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:46,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:46,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:46,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:46,582 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:46,583 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 742 places, 540 transitions, 9131 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:46,583 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:46,583 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:46,583 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:48,081 INFO L129 PetriNetUnfolder]: 736/2832 cut-off events. [2022-07-13 22:06:48,081 INFO L130 PetriNetUnfolder]: For 103589/103645 co-relation queries the response was YES. [2022-07-13 22:06:48,148 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23078 conditions, 2832 events. 736/2832 cut-off events. For 103589/103645 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 23124 event pairs, 365 based on Foata normal form. 13/2783 useless extension candidates. Maximal degree in co-relation 22754. Up to 838 conditions per place. [2022-07-13 22:06:48,158 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 314 selfloop transitions, 116 changer transitions 66/645 dead transitions. [2022-07-13 22:06:48,158 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 755 places, 645 transitions, 13295 flow [2022-07-13 22:06:48,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-13 22:06:48,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-13 22:06:48,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6079 transitions. [2022-07-13 22:06:48,162 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7617794486215539 [2022-07-13 22:06:48,162 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6079 transitions. [2022-07-13 22:06:48,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6079 transitions. [2022-07-13 22:06:48,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:48,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6079 transitions. [2022-07-13 22:06:48,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.97368421052633) internal successors, (6079), 38 states have internal predecessors, (6079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:48,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:48,170 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:48,170 INFO L186 Difference]: Start difference. First operand has 742 places, 540 transitions, 9131 flow. Second operand 38 states and 6079 transitions. [2022-07-13 22:06:48,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 755 places, 645 transitions, 13295 flow [2022-07-13 22:06:48,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 732 places, 645 transitions, 12772 flow, removed 197 selfloop flow, removed 23 redundant places. [2022-07-13 22:06:48,816 INFO L242 Difference]: Finished difference. Result has 755 places, 546 transitions, 9350 flow [2022-07-13 22:06:48,817 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8848, PETRI_DIFFERENCE_MINUEND_PLACES=695, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9350, PETRI_PLACES=755, PETRI_TRANSITIONS=546} [2022-07-13 22:06:48,817 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 568 predicate places. [2022-07-13 22:06:48,817 INFO L495 AbstractCegarLoop]: Abstraction has has 755 places, 546 transitions, 9350 flow [2022-07-13 22:06:48,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:48,817 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:48,818 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:48,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-07-13 22:06:48,818 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:48,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:48,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1855515908, now seen corresponding path program 77 times [2022-07-13 22:06:48,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:48,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338915114] [2022-07-13 22:06:48,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:48,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:48,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:48,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:48,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338915114] [2022-07-13 22:06:48,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338915114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:48,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:48,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:48,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691101422] [2022-07-13 22:06:48,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:48,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:48,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:48,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:48,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:48,923 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:48,923 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 755 places, 546 transitions, 9350 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:48,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:48,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:48,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:50,591 INFO L129 PetriNetUnfolder]: 753/2857 cut-off events. [2022-07-13 22:06:50,591 INFO L130 PetriNetUnfolder]: For 102338/102394 co-relation queries the response was YES. [2022-07-13 22:06:50,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22991 conditions, 2857 events. 753/2857 cut-off events. For 102338/102394 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 23320 event pairs, 340 based on Foata normal form. 13/2812 useless extension candidates. Maximal degree in co-relation 22664. Up to 840 conditions per place. [2022-07-13 22:06:50,663 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 335 selfloop transitions, 145 changer transitions 105/734 dead transitions. [2022-07-13 22:06:50,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 773 places, 734 transitions, 15570 flow [2022-07-13 22:06:50,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-13 22:06:50,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-07-13 22:06:50,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6867 transitions. [2022-07-13 22:06:50,667 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7604651162790698 [2022-07-13 22:06:50,667 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6867 transitions. [2022-07-13 22:06:50,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6867 transitions. [2022-07-13 22:06:50,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:50,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6867 transitions. [2022-07-13 22:06:50,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 159.69767441860466) internal successors, (6867), 43 states have internal predecessors, (6867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:50,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:50,675 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:50,676 INFO L186 Difference]: Start difference. First operand has 755 places, 546 transitions, 9350 flow. Second operand 43 states and 6867 transitions. [2022-07-13 22:06:50,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 773 places, 734 transitions, 15570 flow [2022-07-13 22:06:51,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 750 places, 734 transitions, 15110 flow, removed 146 selfloop flow, removed 23 redundant places. [2022-07-13 22:06:51,376 INFO L242 Difference]: Finished difference. Result has 782 places, 567 transitions, 10187 flow [2022-07-13 22:06:51,376 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9031, PETRI_DIFFERENCE_MINUEND_PLACES=708, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=10187, PETRI_PLACES=782, PETRI_TRANSITIONS=567} [2022-07-13 22:06:51,377 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 595 predicate places. [2022-07-13 22:06:51,377 INFO L495 AbstractCegarLoop]: Abstraction has has 782 places, 567 transitions, 10187 flow [2022-07-13 22:06:51,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:51,377 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:51,377 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:51,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-07-13 22:06:51,378 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:51,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:51,378 INFO L85 PathProgramCache]: Analyzing trace with hash 804427954, now seen corresponding path program 78 times [2022-07-13 22:06:51,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:51,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004286124] [2022-07-13 22:06:51,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:51,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:51,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:51,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:51,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004286124] [2022-07-13 22:06:51,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004286124] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:51,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:51,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:51,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141164286] [2022-07-13 22:06:51,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:51,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:51,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:51,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:51,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:51,511 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:51,512 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 782 places, 567 transitions, 10187 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:51,512 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:51,512 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:51,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:53,238 INFO L129 PetriNetUnfolder]: 788/2956 cut-off events. [2022-07-13 22:06:53,239 INFO L130 PetriNetUnfolder]: For 108443/108499 co-relation queries the response was YES. [2022-07-13 22:06:53,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24291 conditions, 2956 events. 788/2956 cut-off events. For 108443/108499 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 24417 event pairs, 319 based on Foata normal form. 13/2902 useless extension candidates. Maximal degree in co-relation 23952. Up to 860 conditions per place. [2022-07-13 22:06:53,324 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 336 selfloop transitions, 184 changer transitions 90/759 dead transitions. [2022-07-13 22:06:53,324 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 797 places, 759 transitions, 16350 flow [2022-07-13 22:06:53,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-13 22:06:53,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-07-13 22:06:53,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7341 transitions. [2022-07-13 22:06:53,328 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7599378881987577 [2022-07-13 22:06:53,328 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7341 transitions. [2022-07-13 22:06:53,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7341 transitions. [2022-07-13 22:06:53,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:53,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7341 transitions. [2022-07-13 22:06:53,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.58695652173913) internal successors, (7341), 46 states have internal predecessors, (7341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:53,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:53,336 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:53,337 INFO L186 Difference]: Start difference. First operand has 782 places, 567 transitions, 10187 flow. Second operand 46 states and 7341 transitions. [2022-07-13 22:06:53,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 797 places, 759 transitions, 16350 flow [2022-07-13 22:06:54,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 758 places, 759 transitions, 15560 flow, removed 192 selfloop flow, removed 39 redundant places. [2022-07-13 22:06:54,132 INFO L242 Difference]: Finished difference. Result has 791 places, 593 transitions, 10751 flow [2022-07-13 22:06:54,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9625, PETRI_DIFFERENCE_MINUEND_PLACES=713, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=10751, PETRI_PLACES=791, PETRI_TRANSITIONS=593} [2022-07-13 22:06:54,133 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 604 predicate places. [2022-07-13 22:06:54,133 INFO L495 AbstractCegarLoop]: Abstraction has has 791 places, 593 transitions, 10751 flow [2022-07-13 22:06:54,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:54,133 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:54,134 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:54,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-07-13 22:06:54,134 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:54,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:54,134 INFO L85 PathProgramCache]: Analyzing trace with hash 2085860442, now seen corresponding path program 79 times [2022-07-13 22:06:54,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:54,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275785926] [2022-07-13 22:06:54,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:54,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:54,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:54,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:54,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275785926] [2022-07-13 22:06:54,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275785926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:54,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:54,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:54,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092951281] [2022-07-13 22:06:54,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:54,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:54,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:54,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:54,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:54,262 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:54,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 791 places, 593 transitions, 10751 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:54,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:54,263 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:54,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:55,999 INFO L129 PetriNetUnfolder]: 802/3006 cut-off events. [2022-07-13 22:06:55,999 INFO L130 PetriNetUnfolder]: For 95261/95300 co-relation queries the response was YES. [2022-07-13 22:06:56,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24157 conditions, 3006 events. 802/3006 cut-off events. For 95261/95300 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 24865 event pairs, 376 based on Foata normal form. 11/2953 useless extension candidates. Maximal degree in co-relation 23819. Up to 880 conditions per place. [2022-07-13 22:06:56,106 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 362 selfloop transitions, 150 changer transitions 93/754 dead transitions. [2022-07-13 22:06:56,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 801 places, 754 transitions, 16249 flow [2022-07-13 22:06:56,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-13 22:06:56,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-07-13 22:06:56,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7032 transitions. [2022-07-13 22:06:56,109 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7610389610389611 [2022-07-13 22:06:56,109 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7032 transitions. [2022-07-13 22:06:56,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7032 transitions. [2022-07-13 22:06:56,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:56,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7032 transitions. [2022-07-13 22:06:56,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.8181818181818) internal successors, (7032), 44 states have internal predecessors, (7032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:56,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:56,119 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:56,119 INFO L186 Difference]: Start difference. First operand has 791 places, 593 transitions, 10751 flow. Second operand 44 states and 7032 transitions. [2022-07-13 22:06:56,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 801 places, 754 transitions, 16249 flow [2022-07-13 22:06:56,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 772 places, 754 transitions, 15970 flow, removed 95 selfloop flow, removed 29 redundant places. [2022-07-13 22:06:56,918 INFO L242 Difference]: Finished difference. Result has 805 places, 615 transitions, 11693 flow [2022-07-13 22:06:56,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10574, PETRI_DIFFERENCE_MINUEND_PLACES=729, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=11693, PETRI_PLACES=805, PETRI_TRANSITIONS=615} [2022-07-13 22:06:56,918 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 618 predicate places. [2022-07-13 22:06:56,918 INFO L495 AbstractCegarLoop]: Abstraction has has 805 places, 615 transitions, 11693 flow [2022-07-13 22:06:56,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:56,918 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:56,919 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:56,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-07-13 22:06:56,919 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:56,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:56,919 INFO L85 PathProgramCache]: Analyzing trace with hash -2083118272, now seen corresponding path program 80 times [2022-07-13 22:06:56,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:56,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24774644] [2022-07-13 22:06:56,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:56,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:57,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:57,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24774644] [2022-07-13 22:06:57,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24774644] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:57,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:57,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:06:57,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546572429] [2022-07-13 22:06:57,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:57,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:06:57,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:57,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:06:57,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:06:57,028 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:06:57,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 805 places, 615 transitions, 11693 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:57,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:57,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:06:57,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:58,816 INFO L129 PetriNetUnfolder]: 798/2995 cut-off events. [2022-07-13 22:06:58,816 INFO L130 PetriNetUnfolder]: For 98869/98908 co-relation queries the response was YES. [2022-07-13 22:06:58,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24276 conditions, 2995 events. 798/2995 cut-off events. For 98869/98908 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 24702 event pairs, 386 based on Foata normal form. 11/2944 useless extension candidates. Maximal degree in co-relation 23932. Up to 876 conditions per place. [2022-07-13 22:06:58,912 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 311 selfloop transitions, 191 changer transitions 82/733 dead transitions. [2022-07-13 22:06:58,912 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 818 places, 733 transitions, 15901 flow [2022-07-13 22:06:58,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-13 22:06:58,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-07-13 22:06:58,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7187 transitions. [2022-07-13 22:06:58,915 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7605291005291005 [2022-07-13 22:06:58,915 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7187 transitions. [2022-07-13 22:06:58,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7187 transitions. [2022-07-13 22:06:58,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:58,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7187 transitions. [2022-07-13 22:06:58,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.7111111111111) internal successors, (7187), 45 states have internal predecessors, (7187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:58,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:58,924 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:58,924 INFO L186 Difference]: Start difference. First operand has 805 places, 615 transitions, 11693 flow. Second operand 45 states and 7187 transitions. [2022-07-13 22:06:58,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 818 places, 733 transitions, 15901 flow [2022-07-13 22:06:59,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 784 places, 733 transitions, 15275 flow, removed 179 selfloop flow, removed 34 redundant places. [2022-07-13 22:06:59,922 INFO L242 Difference]: Finished difference. Result has 816 places, 617 transitions, 11907 flow [2022-07-13 22:06:59,923 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11248, PETRI_DIFFERENCE_MINUEND_PLACES=740, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=11907, PETRI_PLACES=816, PETRI_TRANSITIONS=617} [2022-07-13 22:06:59,923 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 629 predicate places. [2022-07-13 22:06:59,923 INFO L495 AbstractCegarLoop]: Abstraction has has 816 places, 617 transitions, 11907 flow [2022-07-13 22:06:59,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:59,924 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:59,924 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:59,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-07-13 22:06:59,924 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:59,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:59,924 INFO L85 PathProgramCache]: Analyzing trace with hash -5086072, now seen corresponding path program 81 times [2022-07-13 22:06:59,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:59,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674246558] [2022-07-13 22:06:59,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:59,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:00,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:00,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:00,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674246558] [2022-07-13 22:07:00,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674246558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:00,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:00,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:07:00,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971172575] [2022-07-13 22:07:00,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:00,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:07:00,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:00,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:07:00,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:07:00,036 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:07:00,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 816 places, 617 transitions, 11907 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:00,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:00,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:07:00,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:01,709 INFO L129 PetriNetUnfolder]: 792/3009 cut-off events. [2022-07-13 22:07:01,709 INFO L130 PetriNetUnfolder]: For 96294/96350 co-relation queries the response was YES. [2022-07-13 22:07:01,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24229 conditions, 3009 events. 792/3009 cut-off events. For 96294/96350 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 25033 event pairs, 378 based on Foata normal form. 13/2954 useless extension candidates. Maximal degree in co-relation 23883. Up to 896 conditions per place. [2022-07-13 22:07:01,818 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 355 selfloop transitions, 159 changer transitions 78/741 dead transitions. [2022-07-13 22:07:01,818 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 819 places, 741 transitions, 16257 flow [2022-07-13 22:07:01,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-13 22:07:01,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-13 22:07:01,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5770 transitions. [2022-07-13 22:07:01,821 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7632275132275133 [2022-07-13 22:07:01,821 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5770 transitions. [2022-07-13 22:07:01,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5770 transitions. [2022-07-13 22:07:01,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:01,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5770 transitions. [2022-07-13 22:07:01,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.27777777777777) internal successors, (5770), 36 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:01,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:01,828 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:01,828 INFO L186 Difference]: Start difference. First operand has 816 places, 617 transitions, 11907 flow. Second operand 36 states and 5770 transitions. [2022-07-13 22:07:01,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 819 places, 741 transitions, 16257 flow [2022-07-13 22:07:02,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 784 places, 741 transitions, 15599 flow, removed 190 selfloop flow, removed 35 redundant places. [2022-07-13 22:07:02,672 INFO L242 Difference]: Finished difference. Result has 807 places, 633 transitions, 12315 flow [2022-07-13 22:07:02,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11452, PETRI_DIFFERENCE_MINUEND_PLACES=749, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=12315, PETRI_PLACES=807, PETRI_TRANSITIONS=633} [2022-07-13 22:07:02,672 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 620 predicate places. [2022-07-13 22:07:02,672 INFO L495 AbstractCegarLoop]: Abstraction has has 807 places, 633 transitions, 12315 flow [2022-07-13 22:07:02,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:02,673 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:02,673 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:02,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-07-13 22:07:02,673 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:02,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:02,673 INFO L85 PathProgramCache]: Analyzing trace with hash 2010206374, now seen corresponding path program 82 times [2022-07-13 22:07:02,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:02,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163799042] [2022-07-13 22:07:02,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:02,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:02,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:02,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:02,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163799042] [2022-07-13 22:07:02,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163799042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:02,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:02,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:07:02,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606301208] [2022-07-13 22:07:02,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:02,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:07:02,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:02,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:07:02,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:07:02,777 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:07:02,778 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 807 places, 633 transitions, 12315 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:02,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:02,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:07:02,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:04,336 INFO L129 PetriNetUnfolder]: 786/3015 cut-off events. [2022-07-13 22:07:04,336 INFO L130 PetriNetUnfolder]: For 92428/92484 co-relation queries the response was YES. [2022-07-13 22:07:04,401 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24034 conditions, 3015 events. 786/3015 cut-off events. For 92428/92484 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 25209 event pairs, 322 based on Foata normal form. 13/2959 useless extension candidates. Maximal degree in co-relation 23697. Up to 893 conditions per place. [2022-07-13 22:07:04,411 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 347 selfloop transitions, 202 changer transitions 80/778 dead transitions. [2022-07-13 22:07:04,412 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 778 transitions, 17349 flow [2022-07-13 22:07:04,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-13 22:07:04,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-13 22:07:04,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6079 transitions. [2022-07-13 22:07:04,415 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7617794486215539 [2022-07-13 22:07:04,415 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6079 transitions. [2022-07-13 22:07:04,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6079 transitions. [2022-07-13 22:07:04,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:04,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6079 transitions. [2022-07-13 22:07:04,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.97368421052633) internal successors, (6079), 38 states have internal predecessors, (6079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:04,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:04,422 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:04,422 INFO L186 Difference]: Start difference. First operand has 807 places, 633 transitions, 12315 flow. Second operand 38 states and 6079 transitions. [2022-07-13 22:07:04,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 822 places, 778 transitions, 17349 flow [2022-07-13 22:07:05,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 798 places, 778 transitions, 16870 flow, removed 91 selfloop flow, removed 24 redundant places. [2022-07-13 22:07:05,194 INFO L242 Difference]: Finished difference. Result has 821 places, 640 transitions, 12703 flow [2022-07-13 22:07:05,194 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11947, PETRI_DIFFERENCE_MINUEND_PLACES=761, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=12703, PETRI_PLACES=821, PETRI_TRANSITIONS=640} [2022-07-13 22:07:05,194 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 634 predicate places. [2022-07-13 22:07:05,194 INFO L495 AbstractCegarLoop]: Abstraction has has 821 places, 640 transitions, 12703 flow [2022-07-13 22:07:05,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:05,195 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:05,195 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:05,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-07-13 22:07:05,195 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:05,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:05,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1062619114, now seen corresponding path program 83 times [2022-07-13 22:07:05,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:05,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064073737] [2022-07-13 22:07:05,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:05,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:05,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:05,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:05,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064073737] [2022-07-13 22:07:05,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064073737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:05,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:05,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:07:05,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018779718] [2022-07-13 22:07:05,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:05,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:07:05,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:05,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:07:05,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:07:05,308 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:07:05,309 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 821 places, 640 transitions, 12703 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:05,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:05,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:07:05,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:07,051 INFO L129 PetriNetUnfolder]: 811/3082 cut-off events. [2022-07-13 22:07:07,051 INFO L130 PetriNetUnfolder]: For 95780/95836 co-relation queries the response was YES. [2022-07-13 22:07:07,129 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24975 conditions, 3082 events. 811/3082 cut-off events. For 95780/95836 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 25859 event pairs, 388 based on Foata normal form. 13/3028 useless extension candidates. Maximal degree in co-relation 24634. Up to 906 conditions per place. [2022-07-13 22:07:07,141 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 367 selfloop transitions, 167 changer transitions 70/753 dead transitions. [2022-07-13 22:07:07,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 833 places, 753 transitions, 16747 flow [2022-07-13 22:07:07,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-13 22:07:07,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-13 22:07:07,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5933 transitions. [2022-07-13 22:07:07,146 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7635778635778636 [2022-07-13 22:07:07,146 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5933 transitions. [2022-07-13 22:07:07,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5933 transitions. [2022-07-13 22:07:07,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:07,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5933 transitions. [2022-07-13 22:07:07,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.35135135135135) internal successors, (5933), 37 states have internal predecessors, (5933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:07,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:07,153 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:07,154 INFO L186 Difference]: Start difference. First operand has 821 places, 640 transitions, 12703 flow. Second operand 37 states and 5933 transitions. [2022-07-13 22:07:07,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 833 places, 753 transitions, 16747 flow [2022-07-13 22:07:07,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 811 places, 753 transitions, 16438 flow, removed 80 selfloop flow, removed 22 redundant places. [2022-07-13 22:07:07,948 INFO L242 Difference]: Finished difference. Result has 835 places, 659 transitions, 13456 flow [2022-07-13 22:07:07,948 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12474, PETRI_DIFFERENCE_MINUEND_PLACES=775, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=13456, PETRI_PLACES=835, PETRI_TRANSITIONS=659} [2022-07-13 22:07:07,948 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 648 predicate places. [2022-07-13 22:07:07,948 INFO L495 AbstractCegarLoop]: Abstraction has has 835 places, 659 transitions, 13456 flow [2022-07-13 22:07:07,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:07,949 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:07,949 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:07,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-07-13 22:07:07,949 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:07,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:07,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1151160580, now seen corresponding path program 84 times [2022-07-13 22:07:07,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:07,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507656654] [2022-07-13 22:07:07,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:07,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:08,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:08,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:08,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507656654] [2022-07-13 22:07:08,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507656654] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:08,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:08,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:07:08,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706058907] [2022-07-13 22:07:08,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:08,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:07:08,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:08,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:07:08,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:07:08,071 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:07:08,072 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 835 places, 659 transitions, 13456 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:08,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:08,072 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:07:08,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:09,757 INFO L129 PetriNetUnfolder]: 804/3069 cut-off events. [2022-07-13 22:07:09,757 INFO L130 PetriNetUnfolder]: For 97163/97219 co-relation queries the response was YES. [2022-07-13 22:07:09,832 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24972 conditions, 3069 events. 804/3069 cut-off events. For 97163/97219 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 25738 event pairs, 372 based on Foata normal form. 13/3014 useless extension candidates. Maximal degree in co-relation 24626. Up to 902 conditions per place. [2022-07-13 22:07:09,843 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 377 selfloop transitions, 168 changer transitions 74/768 dead transitions. [2022-07-13 22:07:09,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 849 places, 768 transitions, 17620 flow [2022-07-13 22:07:09,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-13 22:07:09,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-13 22:07:09,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6087 transitions. [2022-07-13 22:07:09,846 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.762781954887218 [2022-07-13 22:07:09,846 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6087 transitions. [2022-07-13 22:07:09,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6087 transitions. [2022-07-13 22:07:09,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:09,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6087 transitions. [2022-07-13 22:07:09,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.18421052631578) internal successors, (6087), 38 states have internal predecessors, (6087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:09,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:09,853 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:09,853 INFO L186 Difference]: Start difference. First operand has 835 places, 659 transitions, 13456 flow. Second operand 38 states and 6087 transitions. [2022-07-13 22:07:09,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 849 places, 768 transitions, 17620 flow [2022-07-13 22:07:10,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 828 places, 768 transitions, 17166 flow, removed 121 selfloop flow, removed 21 redundant places. [2022-07-13 22:07:10,666 INFO L242 Difference]: Finished difference. Result has 851 places, 664 transitions, 13795 flow [2022-07-13 22:07:10,666 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13157, PETRI_DIFFERENCE_MINUEND_PLACES=791, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=13795, PETRI_PLACES=851, PETRI_TRANSITIONS=664} [2022-07-13 22:07:10,667 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 664 predicate places. [2022-07-13 22:07:10,667 INFO L495 AbstractCegarLoop]: Abstraction has has 851 places, 664 transitions, 13795 flow [2022-07-13 22:07:10,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:10,667 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:10,667 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:10,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-07-13 22:07:10,667 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:10,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:10,668 INFO L85 PathProgramCache]: Analyzing trace with hash 447602958, now seen corresponding path program 85 times [2022-07-13 22:07:10,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:10,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67949191] [2022-07-13 22:07:10,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:10,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:10,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:10,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:10,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67949191] [2022-07-13 22:07:10,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67949191] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:10,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:10,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:07:10,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083577767] [2022-07-13 22:07:10,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:10,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:07:10,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:10,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:07:10,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:07:10,772 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:07:10,772 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 851 places, 664 transitions, 13795 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:10,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:10,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:07:10,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:12,475 INFO L129 PetriNetUnfolder]: 809/3068 cut-off events. [2022-07-13 22:07:12,475 INFO L130 PetriNetUnfolder]: For 95805/95844 co-relation queries the response was YES. [2022-07-13 22:07:12,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24926 conditions, 3068 events. 809/3068 cut-off events. For 95805/95844 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 25637 event pairs, 368 based on Foata normal form. 11/3012 useless extension candidates. Maximal degree in co-relation 24574. Up to 915 conditions per place. [2022-07-13 22:07:12,564 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 359 selfloop transitions, 198 changer transitions 80/786 dead transitions. [2022-07-13 22:07:12,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 861 places, 786 transitions, 18153 flow [2022-07-13 22:07:12,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 22:07:12,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-13 22:07:12,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5606 transitions. [2022-07-13 22:07:12,567 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7627210884353741 [2022-07-13 22:07:12,567 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5606 transitions. [2022-07-13 22:07:12,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5606 transitions. [2022-07-13 22:07:12,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:12,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5606 transitions. [2022-07-13 22:07:12,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.17142857142858) internal successors, (5606), 35 states have internal predecessors, (5606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:12,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:12,574 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:12,574 INFO L186 Difference]: Start difference. First operand has 851 places, 664 transitions, 13795 flow. Second operand 35 states and 5606 transitions. [2022-07-13 22:07:12,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 861 places, 786 transitions, 18153 flow [2022-07-13 22:07:13,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 840 places, 786 transitions, 17778 flow, removed 81 selfloop flow, removed 21 redundant places. [2022-07-13 22:07:13,487 INFO L242 Difference]: Finished difference. Result has 862 places, 677 transitions, 14360 flow [2022-07-13 22:07:13,488 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13483, PETRI_DIFFERENCE_MINUEND_PLACES=806, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=14360, PETRI_PLACES=862, PETRI_TRANSITIONS=677} [2022-07-13 22:07:13,488 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 675 predicate places. [2022-07-13 22:07:13,488 INFO L495 AbstractCegarLoop]: Abstraction has has 862 places, 677 transitions, 14360 flow [2022-07-13 22:07:13,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:13,489 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:13,489 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:13,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-07-13 22:07:13,489 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:13,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:13,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1277149162, now seen corresponding path program 86 times [2022-07-13 22:07:13,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:13,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847571119] [2022-07-13 22:07:13,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:13,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:13,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:13,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:13,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847571119] [2022-07-13 22:07:13,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847571119] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:13,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:13,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:07:13,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92549430] [2022-07-13 22:07:13,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:13,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:07:13,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:13,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:07:13,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:07:13,603 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:07:13,604 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 862 places, 677 transitions, 14360 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:13,604 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:13,604 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:07:13,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:15,416 INFO L129 PetriNetUnfolder]: 826/3165 cut-off events. [2022-07-13 22:07:15,416 INFO L130 PetriNetUnfolder]: For 101092/101131 co-relation queries the response was YES. [2022-07-13 22:07:15,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26032 conditions, 3165 events. 826/3165 cut-off events. For 101092/101131 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 26782 event pairs, 383 based on Foata normal form. 11/3103 useless extension candidates. Maximal degree in co-relation 25676. Up to 927 conditions per place. [2022-07-13 22:07:15,528 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 359 selfloop transitions, 214 changer transitions 69/791 dead transitions. [2022-07-13 22:07:15,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 878 places, 791 transitions, 18584 flow [2022-07-13 22:07:15,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-13 22:07:15,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-13 22:07:15,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6085 transitions. [2022-07-13 22:07:15,532 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7625313283208021 [2022-07-13 22:07:15,532 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6085 transitions. [2022-07-13 22:07:15,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6085 transitions. [2022-07-13 22:07:15,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:15,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6085 transitions. [2022-07-13 22:07:15,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.1315789473684) internal successors, (6085), 38 states have internal predecessors, (6085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:15,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:15,542 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:15,542 INFO L186 Difference]: Start difference. First operand has 862 places, 677 transitions, 14360 flow. Second operand 38 states and 6085 transitions. [2022-07-13 22:07:15,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 878 places, 791 transitions, 18584 flow [2022-07-13 22:07:16,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 851 places, 791 transitions, 17923 flow, removed 97 selfloop flow, removed 27 redundant places. [2022-07-13 22:07:16,412 INFO L242 Difference]: Finished difference. Result has 875 places, 696 transitions, 14883 flow [2022-07-13 22:07:16,412 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13795, PETRI_DIFFERENCE_MINUEND_PLACES=814, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=14883, PETRI_PLACES=875, PETRI_TRANSITIONS=696} [2022-07-13 22:07:16,412 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 688 predicate places. [2022-07-13 22:07:16,412 INFO L495 AbstractCegarLoop]: Abstraction has has 875 places, 696 transitions, 14883 flow [2022-07-13 22:07:16,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:16,413 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:16,413 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:16,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-07-13 22:07:16,413 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:16,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:16,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1059529922, now seen corresponding path program 87 times [2022-07-13 22:07:16,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:16,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010756716] [2022-07-13 22:07:16,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:16,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:16,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:16,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:16,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010756716] [2022-07-13 22:07:16,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010756716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:16,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:16,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:07:16,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844664702] [2022-07-13 22:07:16,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:16,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:07:16,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:16,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:07:16,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:07:16,533 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:07:16,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 875 places, 696 transitions, 14883 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:16,534 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:16,534 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:07:16,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:18,249 INFO L129 PetriNetUnfolder]: 850/3227 cut-off events. [2022-07-13 22:07:18,249 INFO L130 PetriNetUnfolder]: For 102929/102968 co-relation queries the response was YES. [2022-07-13 22:07:18,327 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26605 conditions, 3227 events. 850/3227 cut-off events. For 102929/102968 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 27465 event pairs, 362 based on Foata normal form. 11/3163 useless extension candidates. Maximal degree in co-relation 26246. Up to 938 conditions per place. [2022-07-13 22:07:18,339 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 410 selfloop transitions, 196 changer transitions 75/830 dead transitions. [2022-07-13 22:07:18,339 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 888 places, 830 transitions, 19816 flow [2022-07-13 22:07:18,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-13 22:07:18,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-13 22:07:18,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6083 transitions. [2022-07-13 22:07:18,342 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.762280701754386 [2022-07-13 22:07:18,342 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6083 transitions. [2022-07-13 22:07:18,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6083 transitions. [2022-07-13 22:07:18,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:18,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6083 transitions. [2022-07-13 22:07:18,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.07894736842104) internal successors, (6083), 38 states have internal predecessors, (6083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:18,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:18,349 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:18,349 INFO L186 Difference]: Start difference. First operand has 875 places, 696 transitions, 14883 flow. Second operand 38 states and 6083 transitions. [2022-07-13 22:07:18,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 888 places, 830 transitions, 19816 flow [2022-07-13 22:07:19,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 868 places, 830 transitions, 19448 flow, removed 78 selfloop flow, removed 20 redundant places. [2022-07-13 22:07:19,192 INFO L242 Difference]: Finished difference. Result has 891 places, 716 transitions, 15731 flow [2022-07-13 22:07:19,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14583, PETRI_DIFFERENCE_MINUEND_PLACES=831, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=15731, PETRI_PLACES=891, PETRI_TRANSITIONS=716} [2022-07-13 22:07:19,192 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 704 predicate places. [2022-07-13 22:07:19,192 INFO L495 AbstractCegarLoop]: Abstraction has has 891 places, 716 transitions, 15731 flow [2022-07-13 22:07:19,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:19,193 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:19,193 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:19,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-07-13 22:07:19,193 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:19,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:19,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1919203644, now seen corresponding path program 88 times [2022-07-13 22:07:19,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:19,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805119907] [2022-07-13 22:07:19,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:19,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:19,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:19,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:19,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805119907] [2022-07-13 22:07:19,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805119907] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:19,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:19,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:07:19,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093949081] [2022-07-13 22:07:19,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:19,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:07:19,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:19,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:07:19,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:07:19,310 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:07:19,310 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 891 places, 716 transitions, 15731 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:19,310 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:19,310 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:07:19,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:21,042 INFO L129 PetriNetUnfolder]: 841/3201 cut-off events. [2022-07-13 22:07:21,042 INFO L130 PetriNetUnfolder]: For 102108/102164 co-relation queries the response was YES. [2022-07-13 22:07:21,127 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26635 conditions, 3201 events. 841/3201 cut-off events. For 102108/102164 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 27260 event pairs, 384 based on Foata normal form. 13/3140 useless extension candidates. Maximal degree in co-relation 26270. Up to 934 conditions per place. [2022-07-13 22:07:21,141 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 365 selfloop transitions, 227 changer transitions 71/812 dead transitions. [2022-07-13 22:07:21,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 903 places, 812 transitions, 19524 flow [2022-07-13 22:07:21,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-13 22:07:21,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-13 22:07:21,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5925 transitions. [2022-07-13 22:07:21,144 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7625482625482626 [2022-07-13 22:07:21,144 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5925 transitions. [2022-07-13 22:07:21,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5925 transitions. [2022-07-13 22:07:21,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:21,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5925 transitions. [2022-07-13 22:07:21,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.13513513513513) internal successors, (5925), 37 states have internal predecessors, (5925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:21,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:21,152 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:21,152 INFO L186 Difference]: Start difference. First operand has 891 places, 716 transitions, 15731 flow. Second operand 37 states and 5925 transitions. [2022-07-13 22:07:21,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 903 places, 812 transitions, 19524 flow [2022-07-13 22:07:22,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 884 places, 812 transitions, 19172 flow, removed 79 selfloop flow, removed 19 redundant places. [2022-07-13 22:07:22,268 INFO L242 Difference]: Finished difference. Result has 907 places, 719 transitions, 16108 flow [2022-07-13 22:07:22,269 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15445, PETRI_DIFFERENCE_MINUEND_PLACES=848, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=716, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=16108, PETRI_PLACES=907, PETRI_TRANSITIONS=719} [2022-07-13 22:07:22,269 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 720 predicate places. [2022-07-13 22:07:22,269 INFO L495 AbstractCegarLoop]: Abstraction has has 907 places, 719 transitions, 16108 flow [2022-07-13 22:07:22,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:22,269 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:22,269 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:22,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-07-13 22:07:22,269 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:22,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:22,270 INFO L85 PathProgramCache]: Analyzing trace with hash 719141910, now seen corresponding path program 89 times [2022-07-13 22:07:22,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:22,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616045672] [2022-07-13 22:07:22,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:22,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:22,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:22,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:22,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616045672] [2022-07-13 22:07:22,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616045672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:22,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:22,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:07:22,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969655039] [2022-07-13 22:07:22,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:22,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:07:22,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:22,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:07:22,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:07:22,377 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:07:22,378 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 907 places, 719 transitions, 16108 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:22,378 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:22,378 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:07:22,378 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:24,186 INFO L129 PetriNetUnfolder]: 852/3214 cut-off events. [2022-07-13 22:07:24,186 INFO L130 PetriNetUnfolder]: For 105060/105116 co-relation queries the response was YES. [2022-07-13 22:07:24,272 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26994 conditions, 3214 events. 852/3214 cut-off events. For 105060/105116 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 27346 event pairs, 379 based on Foata normal form. 13/3152 useless extension candidates. Maximal degree in co-relation 26622. Up to 948 conditions per place. [2022-07-13 22:07:24,284 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 428 selfloop transitions, 183 changer transitions 76/836 dead transitions. [2022-07-13 22:07:24,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 919 places, 836 transitions, 20758 flow [2022-07-13 22:07:24,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-13 22:07:24,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-13 22:07:24,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5774 transitions. [2022-07-13 22:07:24,287 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7637566137566137 [2022-07-13 22:07:24,287 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5774 transitions. [2022-07-13 22:07:24,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5774 transitions. [2022-07-13 22:07:24,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:24,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5774 transitions. [2022-07-13 22:07:24,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.38888888888889) internal successors, (5774), 36 states have internal predecessors, (5774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:24,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:24,294 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:24,294 INFO L186 Difference]: Start difference. First operand has 907 places, 719 transitions, 16108 flow. Second operand 36 states and 5774 transitions. [2022-07-13 22:07:24,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 919 places, 836 transitions, 20758 flow [2022-07-13 22:07:25,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 892 places, 836 transitions, 20298 flow, removed 81 selfloop flow, removed 27 redundant places. [2022-07-13 22:07:25,212 INFO L242 Difference]: Finished difference. Result has 915 places, 735 transitions, 16752 flow [2022-07-13 22:07:25,212 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15710, PETRI_DIFFERENCE_MINUEND_PLACES=857, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=16752, PETRI_PLACES=915, PETRI_TRANSITIONS=735} [2022-07-13 22:07:25,213 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 728 predicate places. [2022-07-13 22:07:25,213 INFO L495 AbstractCegarLoop]: Abstraction has has 915 places, 735 transitions, 16752 flow [2022-07-13 22:07:25,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:25,213 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:25,213 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:25,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-07-13 22:07:25,213 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:25,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:25,213 INFO L85 PathProgramCache]: Analyzing trace with hash -295673624, now seen corresponding path program 90 times [2022-07-13 22:07:25,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:25,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836351696] [2022-07-13 22:07:25,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:25,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:25,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:25,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:25,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836351696] [2022-07-13 22:07:25,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836351696] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:25,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:25,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:07:25,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411913821] [2022-07-13 22:07:25,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:25,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:07:25,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:25,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:07:25,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:07:25,321 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:07:25,321 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 915 places, 735 transitions, 16752 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:25,321 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:25,321 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:07:25,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:27,133 INFO L129 PetriNetUnfolder]: 851/3234 cut-off events. [2022-07-13 22:07:27,133 INFO L130 PetriNetUnfolder]: For 104927/104983 co-relation queries the response was YES. [2022-07-13 22:07:27,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27240 conditions, 3234 events. 851/3234 cut-off events. For 104927/104983 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 27540 event pairs, 382 based on Foata normal form. 13/3177 useless extension candidates. Maximal degree in co-relation 26868. Up to 946 conditions per place. [2022-07-13 22:07:27,244 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 412 selfloop transitions, 198 changer transitions 71/830 dead transitions. [2022-07-13 22:07:27,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 929 places, 830 transitions, 20725 flow [2022-07-13 22:07:27,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-13 22:07:27,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-13 22:07:27,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5929 transitions. [2022-07-13 22:07:27,247 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.763063063063063 [2022-07-13 22:07:27,247 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5929 transitions. [2022-07-13 22:07:27,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5929 transitions. [2022-07-13 22:07:27,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:27,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5929 transitions. [2022-07-13 22:07:27,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.24324324324326) internal successors, (5929), 37 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:27,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:27,255 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:27,255 INFO L186 Difference]: Start difference. First operand has 915 places, 735 transitions, 16752 flow. Second operand 37 states and 5929 transitions. [2022-07-13 22:07:27,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 929 places, 830 transitions, 20725 flow [2022-07-13 22:07:28,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 905 places, 830 transitions, 20157 flow, removed 126 selfloop flow, removed 24 redundant places. [2022-07-13 22:07:28,190 INFO L242 Difference]: Finished difference. Result has 927 places, 737 transitions, 16880 flow [2022-07-13 22:07:28,190 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16303, PETRI_DIFFERENCE_MINUEND_PLACES=869, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=16880, PETRI_PLACES=927, PETRI_TRANSITIONS=737} [2022-07-13 22:07:28,190 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 740 predicate places. [2022-07-13 22:07:28,191 INFO L495 AbstractCegarLoop]: Abstraction has has 927 places, 737 transitions, 16880 flow [2022-07-13 22:07:28,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:28,191 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:28,191 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:28,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-07-13 22:07:28,191 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:28,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:28,191 INFO L85 PathProgramCache]: Analyzing trace with hash -185393340, now seen corresponding path program 91 times [2022-07-13 22:07:28,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:28,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313772362] [2022-07-13 22:07:28,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:28,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:28,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:28,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313772362] [2022-07-13 22:07:28,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313772362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:28,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:28,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:07:28,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610003592] [2022-07-13 22:07:28,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:28,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:07:28,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:28,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:07:28,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:07:28,290 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:07:28,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 927 places, 737 transitions, 16880 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:28,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:28,291 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:07:28,291 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:30,162 INFO L129 PetriNetUnfolder]: 839/3238 cut-off events. [2022-07-13 22:07:30,162 INFO L130 PetriNetUnfolder]: For 105038/105077 co-relation queries the response was YES. [2022-07-13 22:07:30,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27040 conditions, 3238 events. 839/3238 cut-off events. For 105038/105077 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 27695 event pairs, 333 based on Foata normal form. 11/3180 useless extension candidates. Maximal degree in co-relation 26665. Up to 953 conditions per place. [2022-07-13 22:07:30,244 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 390 selfloop transitions, 239 changer transitions 70/848 dead transitions. [2022-07-13 22:07:30,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 933 places, 848 transitions, 21127 flow [2022-07-13 22:07:30,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:07:30,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:07:30,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2022-07-13 22:07:30,246 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2022-07-13 22:07:30,246 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2022-07-13 22:07:30,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2022-07-13 22:07:30,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:30,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2022-07-13 22:07:30,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:30,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:30,252 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:30,252 INFO L186 Difference]: Start difference. First operand has 927 places, 737 transitions, 16880 flow. Second operand 30 states and 4817 transitions. [2022-07-13 22:07:30,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 933 places, 848 transitions, 21127 flow [2022-07-13 22:07:31,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 899 places, 848 transitions, 20454 flow, removed 109 selfloop flow, removed 34 redundant places. [2022-07-13 22:07:31,194 INFO L242 Difference]: Finished difference. Result has 912 places, 743 transitions, 17000 flow [2022-07-13 22:07:31,195 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16285, PETRI_DIFFERENCE_MINUEND_PLACES=870, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17000, PETRI_PLACES=912, PETRI_TRANSITIONS=743} [2022-07-13 22:07:31,195 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 725 predicate places. [2022-07-13 22:07:31,195 INFO L495 AbstractCegarLoop]: Abstraction has has 912 places, 743 transitions, 17000 flow [2022-07-13 22:07:31,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:31,196 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:31,196 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:31,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-07-13 22:07:31,196 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:31,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:31,196 INFO L85 PathProgramCache]: Analyzing trace with hash 67106810, now seen corresponding path program 92 times [2022-07-13 22:07:31,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:31,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244524818] [2022-07-13 22:07:31,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:31,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:31,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:31,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:31,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244524818] [2022-07-13 22:07:31,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244524818] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:31,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:31,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:07:31,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314769171] [2022-07-13 22:07:31,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:31,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:07:31,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:31,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:07:31,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:07:31,299 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:07:31,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 912 places, 743 transitions, 17000 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:31,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:31,300 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:07:31,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:32,954 INFO L129 PetriNetUnfolder]: 827/3169 cut-off events. [2022-07-13 22:07:32,954 INFO L130 PetriNetUnfolder]: For 99742/99798 co-relation queries the response was YES. [2022-07-13 22:07:33,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26317 conditions, 3169 events. 827/3169 cut-off events. For 99742/99798 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 26918 event pairs, 374 based on Foata normal form. 13/3108 useless extension candidates. Maximal degree in co-relation 25959. Up to 944 conditions per place. [2022-07-13 22:07:33,046 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 391 selfloop transitions, 221 changer transitions 60/821 dead transitions. [2022-07-13 22:07:33,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 926 places, 821 transitions, 20336 flow [2022-07-13 22:07:33,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:07:33,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:07:33,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4823 transitions. [2022-07-13 22:07:33,049 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7655555555555555 [2022-07-13 22:07:33,049 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4823 transitions. [2022-07-13 22:07:33,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4823 transitions. [2022-07-13 22:07:33,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:33,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4823 transitions. [2022-07-13 22:07:33,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.76666666666668) internal successors, (4823), 30 states have internal predecessors, (4823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:33,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:33,055 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:33,055 INFO L186 Difference]: Start difference. First operand has 912 places, 743 transitions, 17000 flow. Second operand 30 states and 4823 transitions. [2022-07-13 22:07:33,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 926 places, 821 transitions, 20336 flow [2022-07-13 22:07:33,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 912 places, 821 transitions, 20006 flow, removed 80 selfloop flow, removed 14 redundant places. [2022-07-13 22:07:33,885 INFO L242 Difference]: Finished difference. Result has 926 places, 748 transitions, 17396 flow [2022-07-13 22:07:33,885 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16734, PETRI_DIFFERENCE_MINUEND_PLACES=883, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17396, PETRI_PLACES=926, PETRI_TRANSITIONS=748} [2022-07-13 22:07:33,885 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 739 predicate places. [2022-07-13 22:07:33,885 INFO L495 AbstractCegarLoop]: Abstraction has has 926 places, 748 transitions, 17396 flow [2022-07-13 22:07:33,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:33,886 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:33,886 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:33,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-07-13 22:07:33,886 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:33,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:33,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1858729482, now seen corresponding path program 93 times [2022-07-13 22:07:33,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:33,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311905497] [2022-07-13 22:07:33,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:33,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:33,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:33,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:33,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311905497] [2022-07-13 22:07:33,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311905497] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:33,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:33,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:07:33,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663161946] [2022-07-13 22:07:33,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:33,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:07:33,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:33,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:07:33,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:07:33,984 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:07:33,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 926 places, 748 transitions, 17396 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:33,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:33,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:07:33,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:35,749 INFO L129 PetriNetUnfolder]: 821/3174 cut-off events. [2022-07-13 22:07:35,749 INFO L130 PetriNetUnfolder]: For 100568/100607 co-relation queries the response was YES. [2022-07-13 22:07:35,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26355 conditions, 3174 events. 821/3174 cut-off events. For 100568/100607 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 26892 event pairs, 362 based on Foata normal form. 11/3115 useless extension candidates. Maximal degree in co-relation 25994. Up to 951 conditions per place. [2022-07-13 22:07:35,841 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 416 selfloop transitions, 208 changer transitions 63/836 dead transitions. [2022-07-13 22:07:35,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 940 places, 836 transitions, 21053 flow [2022-07-13 22:07:35,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:07:35,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:07:35,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4819 transitions. [2022-07-13 22:07:35,844 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7649206349206349 [2022-07-13 22:07:35,844 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4819 transitions. [2022-07-13 22:07:35,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4819 transitions. [2022-07-13 22:07:35,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:35,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4819 transitions. [2022-07-13 22:07:35,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.63333333333333) internal successors, (4819), 30 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:35,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:35,850 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:35,850 INFO L186 Difference]: Start difference. First operand has 926 places, 748 transitions, 17396 flow. Second operand 30 states and 4819 transitions. [2022-07-13 22:07:35,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 940 places, 836 transitions, 21053 flow [2022-07-13 22:07:36,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 926 places, 836 transitions, 20684 flow, removed 69 selfloop flow, removed 14 redundant places. [2022-07-13 22:07:36,757 INFO L242 Difference]: Finished difference. Result has 939 places, 754 transitions, 17725 flow [2022-07-13 22:07:36,758 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17061, PETRI_DIFFERENCE_MINUEND_PLACES=897, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17725, PETRI_PLACES=939, PETRI_TRANSITIONS=754} [2022-07-13 22:07:36,758 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 752 predicate places. [2022-07-13 22:07:36,758 INFO L495 AbstractCegarLoop]: Abstraction has has 939 places, 754 transitions, 17725 flow [2022-07-13 22:07:36,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:36,759 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:36,759 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:36,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-07-13 22:07:36,759 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:36,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:36,759 INFO L85 PathProgramCache]: Analyzing trace with hash 68148550, now seen corresponding path program 94 times [2022-07-13 22:07:36,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:36,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238828921] [2022-07-13 22:07:36,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:36,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:36,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:36,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:36,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238828921] [2022-07-13 22:07:36,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238828921] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:36,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:36,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:07:36,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855151075] [2022-07-13 22:07:36,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:36,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:07:36,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:36,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:07:36,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:07:36,863 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:07:36,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 939 places, 754 transitions, 17725 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:36,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:36,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:07:36,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:38,491 INFO L129 PetriNetUnfolder]: 824/3181 cut-off events. [2022-07-13 22:07:38,491 INFO L130 PetriNetUnfolder]: For 101598/101637 co-relation queries the response was YES. [2022-07-13 22:07:38,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26527 conditions, 3181 events. 824/3181 cut-off events. For 101598/101637 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 26993 event pairs, 363 based on Foata normal form. 11/3122 useless extension candidates. Maximal degree in co-relation 26163. Up to 949 conditions per place. [2022-07-13 22:07:38,587 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 440 selfloop transitions, 187 changer transitions 62/838 dead transitions. [2022-07-13 22:07:38,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 951 places, 838 transitions, 21409 flow [2022-07-13 22:07:38,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-13 22:07:38,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-13 22:07:38,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4510 transitions. [2022-07-13 22:07:38,589 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7670068027210885 [2022-07-13 22:07:38,589 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4510 transitions. [2022-07-13 22:07:38,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4510 transitions. [2022-07-13 22:07:38,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:38,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4510 transitions. [2022-07-13 22:07:38,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 161.07142857142858) internal successors, (4510), 28 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:38,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:38,595 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:38,595 INFO L186 Difference]: Start difference. First operand has 939 places, 754 transitions, 17725 flow. Second operand 28 states and 4510 transitions. [2022-07-13 22:07:38,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 951 places, 838 transitions, 21409 flow [2022-07-13 22:07:39,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 937 places, 838 transitions, 20996 flow, removed 81 selfloop flow, removed 14 redundant places. [2022-07-13 22:07:39,544 INFO L242 Difference]: Finished difference. Result has 949 places, 762 transitions, 18066 flow [2022-07-13 22:07:39,545 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17365, PETRI_DIFFERENCE_MINUEND_PLACES=910, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=18066, PETRI_PLACES=949, PETRI_TRANSITIONS=762} [2022-07-13 22:07:39,545 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 762 predicate places. [2022-07-13 22:07:39,545 INFO L495 AbstractCegarLoop]: Abstraction has has 949 places, 762 transitions, 18066 flow [2022-07-13 22:07:39,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:39,545 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:39,546 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:39,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-07-13 22:07:39,546 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:39,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:39,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1234358012, now seen corresponding path program 95 times [2022-07-13 22:07:39,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:39,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144738453] [2022-07-13 22:07:39,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:39,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:39,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:39,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:39,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144738453] [2022-07-13 22:07:39,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144738453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:39,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:39,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:07:39,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798373959] [2022-07-13 22:07:39,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:39,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:07:39,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:39,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:07:39,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:07:39,659 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:07:39,659 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 949 places, 762 transitions, 18066 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:39,659 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:39,659 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:07:39,659 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:41,373 INFO L129 PetriNetUnfolder]: 832/3189 cut-off events. [2022-07-13 22:07:41,373 INFO L130 PetriNetUnfolder]: For 102691/102730 co-relation queries the response was YES. [2022-07-13 22:07:41,457 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26681 conditions, 3189 events. 832/3189 cut-off events. For 102691/102730 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 27048 event pairs, 368 based on Foata normal form. 11/3129 useless extension candidates. Maximal degree in co-relation 26314. Up to 951 conditions per place. [2022-07-13 22:07:41,469 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 407 selfloop transitions, 230 changer transitions 59/845 dead transitions. [2022-07-13 22:07:41,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 965 places, 845 transitions, 21653 flow [2022-07-13 22:07:41,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:07:41,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:07:41,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4821 transitions. [2022-07-13 22:07:41,472 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7652380952380953 [2022-07-13 22:07:41,472 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4821 transitions. [2022-07-13 22:07:41,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4821 transitions. [2022-07-13 22:07:41,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:41,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4821 transitions. [2022-07-13 22:07:41,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.7) internal successors, (4821), 30 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:41,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:41,478 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:41,478 INFO L186 Difference]: Start difference. First operand has 949 places, 762 transitions, 18066 flow. Second operand 30 states and 4821 transitions. [2022-07-13 22:07:41,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 965 places, 845 transitions, 21653 flow [2022-07-13 22:07:42,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 949 places, 845 transitions, 21185 flow, removed 70 selfloop flow, removed 16 redundant places. [2022-07-13 22:07:42,455 INFO L242 Difference]: Finished difference. Result has 963 places, 774 transitions, 18545 flow [2022-07-13 22:07:42,455 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17639, PETRI_DIFFERENCE_MINUEND_PLACES=920, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=18545, PETRI_PLACES=963, PETRI_TRANSITIONS=774} [2022-07-13 22:07:42,455 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 776 predicate places. [2022-07-13 22:07:42,456 INFO L495 AbstractCegarLoop]: Abstraction has has 963 places, 774 transitions, 18545 flow [2022-07-13 22:07:42,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:42,456 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:42,456 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:42,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-07-13 22:07:42,456 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:42,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:42,457 INFO L85 PathProgramCache]: Analyzing trace with hash -2068322910, now seen corresponding path program 96 times [2022-07-13 22:07:42,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:42,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011079096] [2022-07-13 22:07:42,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:42,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:42,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:42,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:42,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011079096] [2022-07-13 22:07:42,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011079096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:42,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:42,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:07:42,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378069225] [2022-07-13 22:07:42,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:42,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:07:42,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:42,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:07:42,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:07:42,559 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:07:42,560 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 963 places, 774 transitions, 18545 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:42,560 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:42,560 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:07:42,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:44,265 INFO L129 PetriNetUnfolder]: 824/3168 cut-off events. [2022-07-13 22:07:44,265 INFO L130 PetriNetUnfolder]: For 105597/105653 co-relation queries the response was YES. [2022-07-13 22:07:44,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26647 conditions, 3168 events. 824/3168 cut-off events. For 105597/105653 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 26890 event pairs, 365 based on Foata normal form. 13/3111 useless extension candidates. Maximal degree in co-relation 26276. Up to 948 conditions per place. [2022-07-13 22:07:44,389 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 399 selfloop transitions, 238 changer transitions 61/847 dead transitions. [2022-07-13 22:07:44,389 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 976 places, 847 transitions, 21894 flow [2022-07-13 22:07:44,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 22:07:44,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-13 22:07:44,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4663 transitions. [2022-07-13 22:07:44,392 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7656814449917898 [2022-07-13 22:07:44,392 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4663 transitions. [2022-07-13 22:07:44,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4663 transitions. [2022-07-13 22:07:44,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:44,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4663 transitions. [2022-07-13 22:07:44,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.79310344827587) internal successors, (4663), 29 states have internal predecessors, (4663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:44,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:44,399 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:44,399 INFO L186 Difference]: Start difference. First operand has 963 places, 774 transitions, 18545 flow. Second operand 29 states and 4663 transitions. [2022-07-13 22:07:44,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 976 places, 847 transitions, 21894 flow [2022-07-13 22:07:45,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 964 places, 847 transitions, 21525 flow, removed 66 selfloop flow, removed 12 redundant places. [2022-07-13 22:07:45,420 INFO L242 Difference]: Finished difference. Result has 977 places, 776 transitions, 18840 flow [2022-07-13 22:07:45,421 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18234, PETRI_DIFFERENCE_MINUEND_PLACES=936, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=18840, PETRI_PLACES=977, PETRI_TRANSITIONS=776} [2022-07-13 22:07:45,421 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 790 predicate places. [2022-07-13 22:07:45,421 INFO L495 AbstractCegarLoop]: Abstraction has has 977 places, 776 transitions, 18840 flow [2022-07-13 22:07:45,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:45,421 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:45,422 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:45,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-07-13 22:07:45,422 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:45,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:45,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1486527116, now seen corresponding path program 97 times [2022-07-13 22:07:45,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:45,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139749197] [2022-07-13 22:07:45,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:45,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:45,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:45,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:45,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139749197] [2022-07-13 22:07:45,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139749197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:45,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:45,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:07:45,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166786884] [2022-07-13 22:07:45,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:45,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:07:45,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:45,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:07:45,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:07:45,525 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:07:45,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 977 places, 776 transitions, 18840 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:45,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:45,526 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:07:45,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:47,148 INFO L129 PetriNetUnfolder]: 799/3089 cut-off events. [2022-07-13 22:07:47,149 INFO L130 PetriNetUnfolder]: For 101833/101872 co-relation queries the response was YES. [2022-07-13 22:07:47,258 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25824 conditions, 3089 events. 799/3089 cut-off events. For 101833/101872 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 26005 event pairs, 355 based on Foata normal form. 11/3031 useless extension candidates. Maximal degree in co-relation 25448. Up to 937 conditions per place. [2022-07-13 22:07:47,273 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 449 selfloop transitions, 164 changer transitions 67/829 dead transitions. [2022-07-13 22:07:47,274 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 992 places, 829 transitions, 21447 flow [2022-07-13 22:07:47,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:07:47,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:07:47,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4816 transitions. [2022-07-13 22:07:47,277 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7644444444444445 [2022-07-13 22:07:47,277 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4816 transitions. [2022-07-13 22:07:47,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4816 transitions. [2022-07-13 22:07:47,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:47,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4816 transitions. [2022-07-13 22:07:47,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.53333333333333) internal successors, (4816), 30 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:47,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:47,285 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:47,285 INFO L186 Difference]: Start difference. First operand has 977 places, 776 transitions, 18840 flow. Second operand 30 states and 4816 transitions. [2022-07-13 22:07:47,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 992 places, 829 transitions, 21447 flow [2022-07-13 22:07:48,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 975 places, 829 transitions, 21009 flow, removed 71 selfloop flow, removed 17 redundant places. [2022-07-13 22:07:48,296 INFO L242 Difference]: Finished difference. Result has 986 places, 748 transitions, 17893 flow [2022-07-13 22:07:48,297 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18434, PETRI_DIFFERENCE_MINUEND_PLACES=946, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17893, PETRI_PLACES=986, PETRI_TRANSITIONS=748} [2022-07-13 22:07:48,297 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 799 predicate places. [2022-07-13 22:07:48,297 INFO L495 AbstractCegarLoop]: Abstraction has has 986 places, 748 transitions, 17893 flow [2022-07-13 22:07:48,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:48,297 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:48,297 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:48,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-07-13 22:07:48,297 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:48,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:48,298 INFO L85 PathProgramCache]: Analyzing trace with hash -746357406, now seen corresponding path program 98 times [2022-07-13 22:07:48,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:48,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95847983] [2022-07-13 22:07:48,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:48,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:48,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:48,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:48,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95847983] [2022-07-13 22:07:48,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95847983] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:48,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:48,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:07:48,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442695283] [2022-07-13 22:07:48,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:48,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:07:48,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:48,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:07:48,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:07:48,399 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:07:48,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 986 places, 748 transitions, 17893 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:48,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:48,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:07:48,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:50,093 INFO L129 PetriNetUnfolder]: 807/3126 cut-off events. [2022-07-13 22:07:50,093 INFO L130 PetriNetUnfolder]: For 103884/103923 co-relation queries the response was YES. [2022-07-13 22:07:50,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26194 conditions, 3126 events. 807/3126 cut-off events. For 103884/103923 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 26400 event pairs, 361 based on Foata normal form. 11/3068 useless extension candidates. Maximal degree in co-relation 25819. Up to 941 conditions per place. [2022-07-13 22:07:50,193 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 452 selfloop transitions, 171 changer transitions 60/832 dead transitions. [2022-07-13 22:07:50,193 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 979 places, 832 transitions, 21671 flow [2022-07-13 22:07:50,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 22:07:50,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-13 22:07:50,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4671 transitions. [2022-07-13 22:07:50,195 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7669950738916256 [2022-07-13 22:07:50,195 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4671 transitions. [2022-07-13 22:07:50,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4671 transitions. [2022-07-13 22:07:50,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:50,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4671 transitions. [2022-07-13 22:07:50,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.06896551724137) internal successors, (4671), 29 states have internal predecessors, (4671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:50,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:50,201 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:50,201 INFO L186 Difference]: Start difference. First operand has 986 places, 748 transitions, 17893 flow. Second operand 29 states and 4671 transitions. [2022-07-13 22:07:50,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 979 places, 832 transitions, 21671 flow [2022-07-13 22:07:51,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 945 places, 832 transitions, 20851 flow, removed 51 selfloop flow, removed 34 redundant places. [2022-07-13 22:07:51,194 INFO L242 Difference]: Finished difference. Result has 959 places, 760 transitions, 18057 flow [2022-07-13 22:07:51,194 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17256, PETRI_DIFFERENCE_MINUEND_PLACES=917, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=18057, PETRI_PLACES=959, PETRI_TRANSITIONS=760} [2022-07-13 22:07:51,194 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 772 predicate places. [2022-07-13 22:07:51,194 INFO L495 AbstractCegarLoop]: Abstraction has has 959 places, 760 transitions, 18057 flow [2022-07-13 22:07:51,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:51,195 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:51,195 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:51,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-07-13 22:07:51,195 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:51,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:51,195 INFO L85 PathProgramCache]: Analyzing trace with hash 196424024, now seen corresponding path program 99 times [2022-07-13 22:07:51,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:51,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171866672] [2022-07-13 22:07:51,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:51,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:51,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:51,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:51,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171866672] [2022-07-13 22:07:51,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171866672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:51,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:51,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:07:51,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203606763] [2022-07-13 22:07:51,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:51,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:07:51,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:51,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:07:51,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:07:51,310 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:07:51,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 959 places, 760 transitions, 18057 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:51,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:51,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:07:51,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:52,874 INFO L129 PetriNetUnfolder]: 805/3110 cut-off events. [2022-07-13 22:07:52,874 INFO L130 PetriNetUnfolder]: For 99490/99529 co-relation queries the response was YES. [2022-07-13 22:07:52,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25886 conditions, 3110 events. 805/3110 cut-off events. For 99490/99529 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 26199 event pairs, 356 based on Foata normal form. 11/3053 useless extension candidates. Maximal degree in co-relation 25518. Up to 943 conditions per place. [2022-07-13 22:07:52,979 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 455 selfloop transitions, 176 changer transitions 60/840 dead transitions. [2022-07-13 22:07:52,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 973 places, 840 transitions, 21697 flow [2022-07-13 22:07:52,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 22:07:52,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-13 22:07:52,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4669 transitions. [2022-07-13 22:07:52,982 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2022-07-13 22:07:52,982 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4669 transitions. [2022-07-13 22:07:52,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4669 transitions. [2022-07-13 22:07:52,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:52,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4669 transitions. [2022-07-13 22:07:52,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.0) internal successors, (4669), 29 states have internal predecessors, (4669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:52,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:52,990 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:52,991 INFO L186 Difference]: Start difference. First operand has 959 places, 760 transitions, 18057 flow. Second operand 29 states and 4669 transitions. [2022-07-13 22:07:52,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 973 places, 840 transitions, 21697 flow [2022-07-13 22:07:53,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 960 places, 840 transitions, 21316 flow, removed 68 selfloop flow, removed 13 redundant places. [2022-07-13 22:07:53,955 INFO L242 Difference]: Finished difference. Result has 974 places, 772 transitions, 18573 flow [2022-07-13 22:07:53,955 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17743, PETRI_DIFFERENCE_MINUEND_PLACES=932, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=18573, PETRI_PLACES=974, PETRI_TRANSITIONS=772} [2022-07-13 22:07:53,955 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 787 predicate places. [2022-07-13 22:07:53,955 INFO L495 AbstractCegarLoop]: Abstraction has has 974 places, 772 transitions, 18573 flow [2022-07-13 22:07:53,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:53,956 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:53,956 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:53,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-07-13 22:07:53,956 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:53,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:53,956 INFO L85 PathProgramCache]: Analyzing trace with hash 514081778, now seen corresponding path program 100 times [2022-07-13 22:07:53,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:53,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984409936] [2022-07-13 22:07:53,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:53,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:54,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:54,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:54,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984409936] [2022-07-13 22:07:54,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984409936] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:54,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:54,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:07:54,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599563552] [2022-07-13 22:07:54,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:54,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:07:54,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:54,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:07:54,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:07:54,075 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:07:54,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 974 places, 772 transitions, 18573 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:54,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:54,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:07:54,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:55,718 INFO L129 PetriNetUnfolder]: 789/3067 cut-off events. [2022-07-13 22:07:55,718 INFO L130 PetriNetUnfolder]: For 97753/97809 co-relation queries the response was YES. [2022-07-13 22:07:55,800 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25423 conditions, 3067 events. 789/3067 cut-off events. For 97753/97809 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 25832 event pairs, 355 based on Foata normal form. 13/3012 useless extension candidates. Maximal degree in co-relation 25049. Up to 934 conditions per place. [2022-07-13 22:07:55,811 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 452 selfloop transitions, 157 changer transitions 66/824 dead transitions. [2022-07-13 22:07:55,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 989 places, 824 transitions, 21154 flow [2022-07-13 22:07:55,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:07:55,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:07:55,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4820 transitions. [2022-07-13 22:07:55,814 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2022-07-13 22:07:55,814 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4820 transitions. [2022-07-13 22:07:55,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4820 transitions. [2022-07-13 22:07:55,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:55,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4820 transitions. [2022-07-13 22:07:55,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.66666666666666) internal successors, (4820), 30 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:55,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:55,820 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:55,820 INFO L186 Difference]: Start difference. First operand has 974 places, 772 transitions, 18573 flow. Second operand 30 states and 4820 transitions. [2022-07-13 22:07:55,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 989 places, 824 transitions, 21154 flow [2022-07-13 22:07:56,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 976 places, 824 transitions, 20754 flow, removed 76 selfloop flow, removed 13 redundant places. [2022-07-13 22:07:56,982 INFO L242 Difference]: Finished difference. Result has 985 places, 750 transitions, 17840 flow [2022-07-13 22:07:56,982 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18203, PETRI_DIFFERENCE_MINUEND_PLACES=947, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17840, PETRI_PLACES=985, PETRI_TRANSITIONS=750} [2022-07-13 22:07:56,983 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 798 predicate places. [2022-07-13 22:07:56,983 INFO L495 AbstractCegarLoop]: Abstraction has has 985 places, 750 transitions, 17840 flow [2022-07-13 22:07:56,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:56,983 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:56,983 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:56,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-07-13 22:07:56,984 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:56,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:56,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1874850472, now seen corresponding path program 101 times [2022-07-13 22:07:56,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:56,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079871712] [2022-07-13 22:07:56,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:56,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:57,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:57,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:57,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079871712] [2022-07-13 22:07:57,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079871712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:57,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:57,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:07:57,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279720710] [2022-07-13 22:07:57,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:57,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:07:57,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:57,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:07:57,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:07:57,090 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:07:57,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 985 places, 750 transitions, 17840 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:57,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:57,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:07:57,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:58,726 INFO L129 PetriNetUnfolder]: 776/3017 cut-off events. [2022-07-13 22:07:58,726 INFO L130 PetriNetUnfolder]: For 96950/97006 co-relation queries the response was YES. [2022-07-13 22:07:58,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24823 conditions, 3017 events. 776/3017 cut-off events. For 96950/97006 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 25255 event pairs, 352 based on Foata normal form. 13/2962 useless extension candidates. Maximal degree in co-relation 24448. Up to 934 conditions per place. [2022-07-13 22:07:58,847 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 401 selfloop transitions, 185 changer transitions 65/800 dead transitions. [2022-07-13 22:07:58,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 985 places, 800 transitions, 20337 flow [2022-07-13 22:07:58,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-13 22:07:58,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-13 22:07:58,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4499 transitions. [2022-07-13 22:07:58,850 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7651360544217687 [2022-07-13 22:07:58,850 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4499 transitions. [2022-07-13 22:07:58,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4499 transitions. [2022-07-13 22:07:58,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:58,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4499 transitions. [2022-07-13 22:07:58,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.67857142857142) internal successors, (4499), 28 states have internal predecessors, (4499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:58,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:58,856 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:58,856 INFO L186 Difference]: Start difference. First operand has 985 places, 750 transitions, 17840 flow. Second operand 28 states and 4499 transitions. [2022-07-13 22:07:58,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 985 places, 800 transitions, 20337 flow [2022-07-13 22:07:59,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 955 places, 800 transitions, 19785 flow, removed 38 selfloop flow, removed 30 redundant places. [2022-07-13 22:07:59,790 INFO L242 Difference]: Finished difference. Result has 964 places, 725 transitions, 16981 flow [2022-07-13 22:07:59,790 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17343, PETRI_DIFFERENCE_MINUEND_PLACES=928, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=16981, PETRI_PLACES=964, PETRI_TRANSITIONS=725} [2022-07-13 22:07:59,790 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 777 predicate places. [2022-07-13 22:07:59,790 INFO L495 AbstractCegarLoop]: Abstraction has has 964 places, 725 transitions, 16981 flow [2022-07-13 22:07:59,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:59,791 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:59,791 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:59,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-07-13 22:07:59,791 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:59,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:59,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1432532484, now seen corresponding path program 102 times [2022-07-13 22:07:59,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:59,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725346239] [2022-07-13 22:07:59,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:59,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:59,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:59,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:59,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725346239] [2022-07-13 22:07:59,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725346239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:59,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:59,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:07:59,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017829244] [2022-07-13 22:07:59,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:59,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:07:59,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:59,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:07:59,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:07:59,909 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:07:59,910 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 964 places, 725 transitions, 16981 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:59,910 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:59,910 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:07:59,910 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:01,573 INFO L129 PetriNetUnfolder]: 779/3015 cut-off events. [2022-07-13 22:08:01,573 INFO L130 PetriNetUnfolder]: For 94957/95013 co-relation queries the response was YES. [2022-07-13 22:08:01,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24811 conditions, 3015 events. 779/3015 cut-off events. For 94957/95013 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 25233 event pairs, 349 based on Foata normal form. 13/2960 useless extension candidates. Maximal degree in co-relation 24445. Up to 932 conditions per place. [2022-07-13 22:08:01,647 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 423 selfloop transitions, 176 changer transitions 59/807 dead transitions. [2022-07-13 22:08:01,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 959 places, 807 transitions, 20571 flow [2022-07-13 22:08:01,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 22:08:01,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-13 22:08:01,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4665 transitions. [2022-07-13 22:08:01,650 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7660098522167488 [2022-07-13 22:08:01,650 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4665 transitions. [2022-07-13 22:08:01,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4665 transitions. [2022-07-13 22:08:01,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:01,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4665 transitions. [2022-07-13 22:08:01,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.86206896551724) internal successors, (4665), 29 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:01,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:01,656 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:01,656 INFO L186 Difference]: Start difference. First operand has 964 places, 725 transitions, 16981 flow. Second operand 29 states and 4665 transitions. [2022-07-13 22:08:01,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 959 places, 807 transitions, 20571 flow [2022-07-13 22:08:02,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 807 transitions, 19653 flow, removed 32 selfloop flow, removed 32 redundant places. [2022-07-13 22:08:02,498 INFO L242 Difference]: Finished difference. Result has 941 places, 737 transitions, 17000 flow [2022-07-13 22:08:02,498 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16220, PETRI_DIFFERENCE_MINUEND_PLACES=899, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=17000, PETRI_PLACES=941, PETRI_TRANSITIONS=737} [2022-07-13 22:08:02,498 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 754 predicate places. [2022-07-13 22:08:02,498 INFO L495 AbstractCegarLoop]: Abstraction has has 941 places, 737 transitions, 17000 flow [2022-07-13 22:08:02,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:02,498 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:02,499 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:02,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-07-13 22:08:02,499 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:08:02,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:02,499 INFO L85 PathProgramCache]: Analyzing trace with hash 861471804, now seen corresponding path program 103 times [2022-07-13 22:08:02,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:02,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633931407] [2022-07-13 22:08:02,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:02,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:02,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:02,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:02,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633931407] [2022-07-13 22:08:02,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633931407] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:02,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:02,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:08:02,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385660073] [2022-07-13 22:08:02,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:02,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:08:02,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:02,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:08:02,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:08:02,611 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:08:02,611 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 941 places, 737 transitions, 17000 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:02,611 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:02,612 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:08:02,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:04,145 INFO L129 PetriNetUnfolder]: 783/3046 cut-off events. [2022-07-13 22:08:04,145 INFO L130 PetriNetUnfolder]: For 91962/92018 co-relation queries the response was YES. [2022-07-13 22:08:04,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24924 conditions, 3046 events. 783/3046 cut-off events. For 91962/92018 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 25584 event pairs, 352 based on Foata normal form. 13/2992 useless extension candidates. Maximal degree in co-relation 24563. Up to 934 conditions per place. [2022-07-13 22:08:04,235 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 428 selfloop transitions, 180 changer transitions 61/818 dead transitions. [2022-07-13 22:08:04,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 955 places, 818 transitions, 20559 flow [2022-07-13 22:08:04,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 22:08:04,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-13 22:08:04,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4667 transitions. [2022-07-13 22:08:04,238 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7663382594417077 [2022-07-13 22:08:04,238 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4667 transitions. [2022-07-13 22:08:04,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4667 transitions. [2022-07-13 22:08:04,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:04,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4667 transitions. [2022-07-13 22:08:04,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.93103448275863) internal successors, (4667), 29 states have internal predecessors, (4667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:04,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:04,243 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:04,243 INFO L186 Difference]: Start difference. First operand has 941 places, 737 transitions, 17000 flow. Second operand 29 states and 4667 transitions. [2022-07-13 22:08:04,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 955 places, 818 transitions, 20559 flow [2022-07-13 22:08:05,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 942 places, 818 transitions, 20184 flow, removed 62 selfloop flow, removed 13 redundant places. [2022-07-13 22:08:05,088 INFO L242 Difference]: Finished difference. Result has 955 places, 748 transitions, 17481 flow [2022-07-13 22:08:05,088 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16689, PETRI_DIFFERENCE_MINUEND_PLACES=914, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=17481, PETRI_PLACES=955, PETRI_TRANSITIONS=748} [2022-07-13 22:08:05,089 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 768 predicate places. [2022-07-13 22:08:05,089 INFO L495 AbstractCegarLoop]: Abstraction has has 955 places, 748 transitions, 17481 flow [2022-07-13 22:08:05,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:05,089 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:05,089 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:05,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-07-13 22:08:05,089 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:08:05,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:05,089 INFO L85 PathProgramCache]: Analyzing trace with hash 2001827546, now seen corresponding path program 104 times [2022-07-13 22:08:05,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:05,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732349835] [2022-07-13 22:08:05,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:05,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:05,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:05,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:05,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732349835] [2022-07-13 22:08:05,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732349835] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:05,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:05,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:08:05,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251589024] [2022-07-13 22:08:05,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:05,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:08:05,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:05,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:08:05,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:08:05,189 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:08:05,189 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 955 places, 748 transitions, 17481 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:05,189 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:05,189 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:08:05,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:06,819 INFO L129 PetriNetUnfolder]: 765/2992 cut-off events. [2022-07-13 22:08:06,819 INFO L130 PetriNetUnfolder]: For 91510/91566 co-relation queries the response was YES. [2022-07-13 22:08:06,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24241 conditions, 2992 events. 765/2992 cut-off events. For 91510/91566 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 25011 event pairs, 347 based on Foata normal form. 13/2938 useless extension candidates. Maximal degree in co-relation 23875. Up to 927 conditions per place. [2022-07-13 22:08:06,891 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 422 selfloop transitions, 161 changer transitions 66/798 dead transitions. [2022-07-13 22:08:06,892 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 970 places, 798 transitions, 19937 flow [2022-07-13 22:08:06,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:08:06,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:08:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4816 transitions. [2022-07-13 22:08:06,894 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7644444444444445 [2022-07-13 22:08:06,894 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4816 transitions. [2022-07-13 22:08:06,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4816 transitions. [2022-07-13 22:08:06,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:06,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4816 transitions. [2022-07-13 22:08:06,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.53333333333333) internal successors, (4816), 30 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:06,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:06,900 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:06,900 INFO L186 Difference]: Start difference. First operand has 955 places, 748 transitions, 17481 flow. Second operand 30 states and 4816 transitions. [2022-07-13 22:08:06,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 970 places, 798 transitions, 19937 flow [2022-07-13 22:08:07,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 957 places, 798 transitions, 19534 flow, removed 76 selfloop flow, removed 13 redundant places. [2022-07-13 22:08:07,719 INFO L242 Difference]: Finished difference. Result has 964 places, 724 transitions, 16709 flow [2022-07-13 22:08:07,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17117, PETRI_DIFFERENCE_MINUEND_PLACES=928, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16709, PETRI_PLACES=964, PETRI_TRANSITIONS=724} [2022-07-13 22:08:07,720 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 777 predicate places. [2022-07-13 22:08:07,720 INFO L495 AbstractCegarLoop]: Abstraction has has 964 places, 724 transitions, 16709 flow [2022-07-13 22:08:07,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:07,720 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:07,720 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:07,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-07-13 22:08:07,721 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:08:07,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:07,721 INFO L85 PathProgramCache]: Analyzing trace with hash 635445222, now seen corresponding path program 105 times [2022-07-13 22:08:07,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:07,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369586394] [2022-07-13 22:08:07,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:07,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:07,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:07,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:07,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369586394] [2022-07-13 22:08:07,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369586394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:07,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:07,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:08:07,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805530324] [2022-07-13 22:08:07,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:07,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:08:07,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:07,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:08:07,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:08:07,819 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:08:07,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 964 places, 724 transitions, 16709 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:07,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:07,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:08:07,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:09,337 INFO L129 PetriNetUnfolder]: 758/2966 cut-off events. [2022-07-13 22:08:09,337 INFO L130 PetriNetUnfolder]: For 90768/90807 co-relation queries the response was YES. [2022-07-13 22:08:09,415 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24003 conditions, 2966 events. 758/2966 cut-off events. For 90768/90807 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 24744 event pairs, 338 based on Foata normal form. 11/2910 useless extension candidates. Maximal degree in co-relation 23638. Up to 928 conditions per place. [2022-07-13 22:08:09,426 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 426 selfloop transitions, 171 changer transitions 62/808 dead transitions. [2022-07-13 22:08:09,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 966 places, 808 transitions, 20290 flow [2022-07-13 22:08:09,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:08:09,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:08:09,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4823 transitions. [2022-07-13 22:08:09,429 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7655555555555555 [2022-07-13 22:08:09,429 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4823 transitions. [2022-07-13 22:08:09,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4823 transitions. [2022-07-13 22:08:09,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:09,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4823 transitions. [2022-07-13 22:08:09,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.76666666666668) internal successors, (4823), 30 states have internal predecessors, (4823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:09,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:09,435 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:09,435 INFO L186 Difference]: Start difference. First operand has 964 places, 724 transitions, 16709 flow. Second operand 30 states and 4823 transitions. [2022-07-13 22:08:09,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 966 places, 808 transitions, 20290 flow [2022-07-13 22:08:10,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 926 places, 808 transitions, 19619 flow, removed 31 selfloop flow, removed 40 redundant places. [2022-07-13 22:08:10,231 INFO L242 Difference]: Finished difference. Result has 939 places, 730 transitions, 16694 flow [2022-07-13 22:08:10,231 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16093, PETRI_DIFFERENCE_MINUEND_PLACES=897, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16694, PETRI_PLACES=939, PETRI_TRANSITIONS=730} [2022-07-13 22:08:10,231 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 752 predicate places. [2022-07-13 22:08:10,231 INFO L495 AbstractCegarLoop]: Abstraction has has 939 places, 730 transitions, 16694 flow [2022-07-13 22:08:10,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:10,232 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:10,232 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:10,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-07-13 22:08:10,232 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:08:10,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:10,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1615111364, now seen corresponding path program 106 times [2022-07-13 22:08:10,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:10,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198433584] [2022-07-13 22:08:10,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:10,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:10,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:10,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:10,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198433584] [2022-07-13 22:08:10,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198433584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:10,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:10,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:08:10,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811120523] [2022-07-13 22:08:10,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:10,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:08:10,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:10,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:08:10,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:08:10,333 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:08:10,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 939 places, 730 transitions, 16694 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:10,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:10,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:08:10,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:12,060 INFO L129 PetriNetUnfolder]: 765/2981 cut-off events. [2022-07-13 22:08:12,060 INFO L130 PetriNetUnfolder]: For 89182/89221 co-relation queries the response was YES. [2022-07-13 22:08:12,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24136 conditions, 2981 events. 765/2981 cut-off events. For 89182/89221 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 24857 event pairs, 334 based on Foata normal form. 11/2923 useless extension candidates. Maximal degree in co-relation 23783. Up to 926 conditions per place. [2022-07-13 22:08:12,133 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 398 selfloop transitions, 211 changer transitions 62/820 dead transitions. [2022-07-13 22:08:12,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 953 places, 820 transitions, 20547 flow [2022-07-13 22:08:12,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:08:12,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-13 22:08:12,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4819 transitions. [2022-07-13 22:08:12,136 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7649206349206349 [2022-07-13 22:08:12,136 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4819 transitions. [2022-07-13 22:08:12,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4819 transitions. [2022-07-13 22:08:12,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:12,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4819 transitions. [2022-07-13 22:08:12,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.63333333333333) internal successors, (4819), 30 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:12,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:12,142 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:12,142 INFO L186 Difference]: Start difference. First operand has 939 places, 730 transitions, 16694 flow. Second operand 30 states and 4819 transitions. [2022-07-13 22:08:12,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 953 places, 820 transitions, 20547 flow [2022-07-13 22:08:12,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 940 places, 820 transitions, 20195 flow, removed 75 selfloop flow, removed 13 redundant places. [2022-07-13 22:08:12,915 INFO L242 Difference]: Finished difference. Result has 953 places, 743 transitions, 17323 flow [2022-07-13 22:08:12,915 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16375, PETRI_DIFFERENCE_MINUEND_PLACES=911, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17323, PETRI_PLACES=953, PETRI_TRANSITIONS=743} [2022-07-13 22:08:12,916 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 766 predicate places. [2022-07-13 22:08:12,916 INFO L495 AbstractCegarLoop]: Abstraction has has 953 places, 743 transitions, 17323 flow [2022-07-13 22:08:12,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:12,916 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:12,916 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:12,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-07-13 22:08:12,916 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:08:12,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:12,917 INFO L85 PathProgramCache]: Analyzing trace with hash 879598296, now seen corresponding path program 107 times [2022-07-13 22:08:12,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:12,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406942654] [2022-07-13 22:08:12,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:12,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:13,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:13,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406942654] [2022-07-13 22:08:13,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406942654] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:13,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:13,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:08:13,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059043103] [2022-07-13 22:08:13,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:13,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:08:13,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:13,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:08:13,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:08:13,015 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:08:13,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 953 places, 743 transitions, 17323 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:13,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:13,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:08:13,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:14,451 INFO L129 PetriNetUnfolder]: 764/2985 cut-off events. [2022-07-13 22:08:14,451 INFO L130 PetriNetUnfolder]: For 91144/91183 co-relation queries the response was YES. [2022-07-13 22:08:14,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24215 conditions, 2985 events. 764/2985 cut-off events. For 91144/91183 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 24902 event pairs, 324 based on Foata normal form. 11/2931 useless extension candidates. Maximal degree in co-relation 23858. Up to 932 conditions per place. [2022-07-13 22:08:14,559 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 367 selfloop transitions, 250 changer transitions 65/831 dead transitions. [2022-07-13 22:08:14,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 964 places, 831 transitions, 21087 flow [2022-07-13 22:08:14,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-13 22:08:14,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-13 22:08:14,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4345 transitions. [2022-07-13 22:08:14,562 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7663139329805997 [2022-07-13 22:08:14,562 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4345 transitions. [2022-07-13 22:08:14,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4345 transitions. [2022-07-13 22:08:14,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:14,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4345 transitions. [2022-07-13 22:08:14,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.92592592592592) internal successors, (4345), 27 states have internal predecessors, (4345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:14,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:14,568 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:14,568 INFO L186 Difference]: Start difference. First operand has 953 places, 743 transitions, 17323 flow. Second operand 27 states and 4345 transitions. [2022-07-13 22:08:14,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 964 places, 831 transitions, 21087 flow [2022-07-13 22:08:15,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 951 places, 831 transitions, 20643 flow, removed 67 selfloop flow, removed 13 redundant places. [2022-07-13 22:08:15,418 INFO L242 Difference]: Finished difference. Result has 961 places, 747 transitions, 17566 flow [2022-07-13 22:08:15,419 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16929, PETRI_DIFFERENCE_MINUEND_PLACES=925, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=17566, PETRI_PLACES=961, PETRI_TRANSITIONS=747} [2022-07-13 22:08:15,419 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 774 predicate places. [2022-07-13 22:08:15,419 INFO L495 AbstractCegarLoop]: Abstraction has has 961 places, 747 transitions, 17566 flow [2022-07-13 22:08:15,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:15,419 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:15,420 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:15,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-07-13 22:08:15,420 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:08:15,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:15,420 INFO L85 PathProgramCache]: Analyzing trace with hash -971721614, now seen corresponding path program 108 times [2022-07-13 22:08:15,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:15,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543254226] [2022-07-13 22:08:15,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:15,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:15,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:15,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:15,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543254226] [2022-07-13 22:08:15,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543254226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:15,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:15,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:08:15,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711664656] [2022-07-13 22:08:15,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:15,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:08:15,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:15,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:08:15,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:08:15,517 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-13 22:08:15,518 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 961 places, 747 transitions, 17566 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:15,518 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:15,518 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-13 22:08:15,518 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:17,083 INFO L129 PetriNetUnfolder]: 770/3002 cut-off events. [2022-07-13 22:08:17,083 INFO L130 PetriNetUnfolder]: For 95667/95723 co-relation queries the response was YES. [2022-07-13 22:08:17,153 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24617 conditions, 3002 events. 770/3002 cut-off events. For 95667/95723 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 25132 event pairs, 332 based on Foata normal form. 13/2947 useless extension candidates. Maximal degree in co-relation 24259. Up to 937 conditions per place. [2022-07-13 22:08:17,163 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 430 selfloop transitions, 192 changer transitions 58/829 dead transitions. [2022-07-13 22:08:17,163 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 977 places, 829 transitions, 21267 flow [2022-07-13 22:08:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 22:08:17,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-13 22:08:17,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4667 transitions. [2022-07-13 22:08:17,165 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7663382594417077 [2022-07-13 22:08:17,165 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4667 transitions. [2022-07-13 22:08:17,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4667 transitions. [2022-07-13 22:08:17,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:17,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4667 transitions. [2022-07-13 22:08:17,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.93103448275863) internal successors, (4667), 29 states have internal predecessors, (4667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:17,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:17,171 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:17,171 INFO L186 Difference]: Start difference. First operand has 961 places, 747 transitions, 17566 flow. Second operand 29 states and 4667 transitions. [2022-07-13 22:08:17,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 977 places, 829 transitions, 21267 flow